2015年9月11日星期五

Roughneck Jobs - The Timid Need Not Apply


The 1990s movie Armageddon starring Ben Afleck and Bruce Willis introduced the roughneck to the world on the big screen. The roughneck is someone who works or is employed in an oil field. Whether at land or sea in rigs, there are many kinds of roughneck jobs. Most of these jobs are lucrative and an attractive option for some. This is a short discussion on what kinds of jobs are available in the industry.

How much then can I make as a roughneck or you for that matter? In a year how much does an oil industry worker make? Of course this all depends on the position that one is entering in the industry as different levels and duties have different pay scales. This short discussion will look at some of the most common jobs in the oil industry and their respective remunerations.

Starting with the cooks who makes sure everyone is well nourished and fed throughout the entire 24 hours and the respective shifts, this position roughly pays 35,000 to 42,000 a year. This is roughly the same level as what galley hands make. Galle hands are basically the starters or trainees in the oil industry who will do more important jobs later on.

More skilled than the galley hand, roustabouts make about 45,000 dollars a year. Their job functions include repair of oil field equipment with both hand and power tools. They likewise are involved in the assembly of oil field equipment as well as doing other tasks assigned to them.

Mostly operating in and around the drill equipment, roughnecks earn around 55,000 dollars a year. Their functions do not stop there however as sometimes they do a bit of driving with the heavy equipment and other tasks that are needed in the operation. This job has one of the longer work shifts in the industry.

In charge of servicing the drill pipes while attached to an overhead derrick, the derrickman is the second most important person in a drill crew next to the driller. This position gives around 62,000 dollars a year. The driller is in charge of the whole drill crew and makes around 85,000 dollars a year. He makes sure that working conditions are safe and the drill crew works efficiently and smoothly.

Representing the oil contractor is a supervisor who is called a toolpusher. Sometimes the toolpusher is the local site supervisor for the company if there is no oil contractor. This is an administrative task that ensures that all equipment and necessities are provided in a timely and orderly fashion to the drill crews. This position brings in around 115,000 per year.

The supervisor is the one in charge of the entire field of operations. It is the responsibility of the supervisor that production quotas are met and there is no downtime. This very challenging job brings in around 200,000 to 300,000 per year for the field operations are critical. A variety of other jobs and functions exist within the oil industry, mostly paying handsomely just like the jobs and functions illustrated here.
Drill Pipes
Standard and technical conditions for supply
API SPEC 5DP
Uses:
For well drilling
Note:
1.EU-External Upset IEU-Internal-External Upset IU-Internal Upset
2.Threads of tool joins are left-hand or right-hand
3.Threads are cooper-plated or phosphated
Grade:
E75, X95, G105, S135
The wear-resistant belt of tool joint:
Arnco 100XT, 200XT, 300XT, 400XT
Internal Coating:
TK34, DPC, TC2000, TC3000

2015年9月10日星期四

What Is The Difference Between 304 And 316 Stainless Steel Pipe


The main difference between 304 and 316 stainless steel pipe is that 316 contains 2%-3% molybdenum and 304 has no molybdenum. The "moly" is added to improve the corrosion resistance to chlorides (like sea water). So, while 316 stainless steel pipe is generally considered more corrosion resistant than 304, depending on the nature of the corrosive media the corrosion rates of 304 and 316 could be similar.

Generally, SS 304/304L is assumed to be corrosion-resistant material. But when we come to Piping Specs with SS 304/304L MOC, its value is taken as 0.063 inches -- same for SS316/316L . Please explain.

We have a plant that produces fertilizer. In one section we mix 40% phosphoric acid and 98% sulfuric acid together in a ratio of 75-80 : 25-20 phosphoric acid:sulfuric acid. After that the mixture is cooled to a temperature of 80 degrees C. What is the best material of construction for transfer piping? The existing material, 304 stainless steel pipe, shows problems at the welds.

From a materials of construction perspective, this is a tricky mixture to deal with, especially at 80 degrees C and higher. Phosphoric acid is less corrosive than sulfuric acid. Pure phosphoric acid has no oxidizing power but commercial phosphoric acid contains impurities such as fluorides and chlorides that can significantly increase its corrosivity. The corrosivity of sulfuric acid depends on many factors including temperature, concentration, the presence of oxidizing or reducing impurities, velocity effects, and solids in suspension.

It is usually not wise to select materials of construction for sulfuric acid handling equipment based only on published corrosion data since corrosion by sulfuric acid is a complex phenomenon. Small differences in impurities, velocity, or concentration can significantly impact the corrosion rate. Halides generally increase corrosion while aeration or the presence of oxidizing agents usually increases the corrosion rate of non-ferrous materials  and reduces the corrosion rates of stainless steel pipe alloys. I strongly recommend laboratory corrosion studies be run on your specific stream as a part of your material of construction selection process.


I have a large storage tank of 93% sulfuric acid. I am having excessive corrosion of the top of the 4-inch carbon steel outlet pipe. I am thinking of replacing the outlet pipe with Schedule 120 carbon steel pipe. Is there any more resistant material, insert, or coating you could recommend for increased life?

Carbon steels are only acceptable for 93% sulfuric acid when fluid velocity is low (< 3 ft/sec). For 4-inch diameter piping or less with velocities up to 5.9 ft/sec, 316L stainless steel pipe is a good choice. For velocities higher than 5.9 ft/sec, Alloy 20Cb-3 (UNS N08020) has been used successfully. For additional information, consult NACE Recommended Practice RP-0391 "Materials for the Handling and Storage of Commercial Concentrated (90 to 100%) Sulfuric Acid at Ambient Temperatures."

In your question, you said you are experiencing problems with 304 stainless steel pipe at the welds. If this is the case, you might consider moving to 304L stainless steel pipe. Low carbon versions of austenitic Stainless steel seamless pipe like 304L are designed to eliminate problems associated with carbide precipitation and chromium depletion at welds. If 304L doesn't work, try gradually moving up to a higher alloy. Possible candidate materials in order of generally increasing corrosion resistance are: 316L stainless steel pipe, 20-type alloys like 20Cb-3, higher chromium Fe-Ni-Mo alloys like Alloy 31, and nickel-base molybdenum-chromium alloys like C-276.

Various steel pipe external coating projects are currently implemented by our company including single-layer/ double layer FEB, 2PE, 3PE, 3PP and other anti-corrosion coatings with the performed standards such as DIN 30670, DIN 30671, DIN 30678, CAN/CSA-Z245.21-M92, SY-/T4013-2002,SY/T0315-97 etc.
Anti-corrosion Pipes

2015年9月9日星期三

General Knowledge of Seamless Steel Pipe


1.Seamless steel pipe is a long steel with hollow sections and has no joints surrounding the steel bar. It is mainly used as a pipeline to transfer the fluid, such as oil,natural gas,water and some solid materials,etc. As compared to the flexural torsional strength in the same light, it is an economic cross-section steel. The seamless steel pipes are widely used in the manufactures  and mechniacal parts,such as the oil pipe, automotive transmission shaft,bicycles aircraft,as well as buliding construction. With steel pipe manufacturing, annular parts can improve the material utilization, simplify the manufacturing process, save material and machining time. For example, the roller bearing rings and the jack sets and so on have been widely made of steel pipes. Cylindrical rube can delivery more fluid since the circle has the largest areas under the same circumference. In addition, the ring cross-section bears internal or external pressure, the force more evenly, so that vast majority of tubular steel pipes are cylindrical rubes . However, the tube also has some limitations, such as in-plane bending conditions, the pipe on the better side, rectangular tube bending strength, and a number of sets of frames, steel-wood furniture on the commonly used square, rectangular tube.

2.The pressure of seamless steel pipe



Pressure pipelines are generally composed of pieces of standard parts, so the pressure pipe design component is the selection of its standard parts. the pressure level of pipelines is determined to the pressure level of its standard parts.

Pipeline pressure level consists of two parts:

one is nominal pressure rating which is expressed in the nominal pressure of the standard parts. The other is wall thickness rating which is expressed in the wall thickness of the stand parts.

The pressure grade of the pipes:

The parameters of channels characteristics which are determined by the nominal pressure level and wall thickness are called the pressure grade of the pipes.
the determine of the pressure  grades is not only the basis for pipeline design, but also the core of design. It is the basis of the arrangement of pressure pipe, and pressure pipe stress precondition for checking the design. and it is also an important factor which will affect investment and reliability.

Spiral welded pipe is a strip coil as raw material, often warn extrusion molding, to automatically double-wire submerged arc welding process double-sided spiral welded pipe joints.

Grade: Q235A, Q235B, Q345, L245(B), L290(X42), L320(X46), L360(X52), L390(X56), L415(X60), L450(X60), L485(X70), L555(X80), L290M(X42M), L360M(X52M), L390M(X56M), L415M(X60M), L450M(X65M), L485(X70M), L555(X80M)

SAWH pipe are mainly used in water supply engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation and urban construction, and is one of 20 developing key products of our country.
Used for liquid delivery, such as water supply, drainage and oil.
Used for gas delivery, such as gas, vapour, liquefied petroleum gas and natural gas.
Used for structures, such as piling, birdge, wharf, road and tube for building structures, etc.
SSAW Carbon Steel Pipe

2015年9月8日星期二

Importance and Advantages of a Stainless Steel Seamless Pipe


Steel pipes are extremely popular amongst various industries. However, you will find wide application of stainless steel pipes in maximum industries because of its durability, look and most importantly because of its high resistance and anti-corrosive power. These rods or tubes are available in various types and forms depending on the welding and manufacturing process, the shape, length and so on. The tubes can come in hollow round structured, short and long forms, square and longitudinal shapes, and solid tubes and so on.

About seamless pipes

The word seamless means smooth with respect to structures. The stainless steel seamless pipe forms are highly popular in the market. The main difference between a seamless and welded pipe is that the joint is a part of welded products, while you will see no joints or welding in a seamless steel pipe. The seamless product is achieved by drawing together a solid quarter of steel against a piercing rod and form a hollow round shell. The seamless pipes are also known as the SMLS pipes.

Advantages of this product

Almost all of the industries prefer stainless steel seamless pipe products over the welded ones. There are various reasons for this popularity. The seamless look is definitely better than the welded look. However, more than the look, the smooth structure is known to offer better durability and resistance against pressure. No liquid is likely to sip in or sip out during the passage of the same. For this reason, a seamless steel pipe is considered to be a better product than the welded ones. It is also easy to keep the seamless pipes clean as compared to the ones with a welding.

Usage of these pipes

Since seamless pipes are highly durable, these are not only used in chemical and food industries, but also in various other constructions. These can be the likes of high rise formations, bridges and different types of structures or buildings. The stainless steel seamless pipe structures are known to be able to carry immense weight upon them. Thus, these are also used in various factories, heavy duty pipeline facilities and also to design pressure vehicles. Anti-corrosiveness along with high durability makes these products an ideal choice for most of the industries.
Seamless Steel Pipe
Product Description
1. Commodity Name: Carbon Seamless steel pipe
2. Standard: API,GB,ASTM,ASME,DIN
3. Quality grade:  10#, 20#, A106B, A53B, API 5L B, Q235, Q345, ST37-2, ST 45, ST52.etc.
4. Dimension: 
OD: 1/2"-32"
WT: 2.5-52mm, SCH10~SCH40~XXL
length: 5.8m,6m,12m,SRL,DRL
5. Technique: Hot Rolled/Cold Rolled/ Cold Drawn
6. application
carbon seamless steel pipes are widely used in gas, water and oil, transpotation;constructions;Bridge,highway,windows of model steel door; building materials;fences;heating facilities Fluid Pipe;conduit pipe,scaffolding pipe.etc.

2015年9月7日星期一

Some of the diverse applications of Stainless steel seamless pipe



Stainless steel seamless pipes have become very common these days and are offered by almost all steel pipes manufacturers. The benefits such as higher corrosion resistance than carbon steel and conventional stainless steel and light –weightiness make the design and construction compact and light. Stainless steel is composed of copper, chromium, nickel, tungsten, manganese, etc. and is therefore rust resistant. Stainless steel seamless pipes can prove to be a cheaper alternative to the nickel alloys, which are very costly. Steel has higher strength which leads to reduced thicknesses of section and therefore has reduced weight. It also exhibits good weld ability in thick sections and the ability to be welded is more in stainless steel. Resistance to stress corrosion cracking: Austenitic steel is prone to such corrosions. The resistance posed by stainless steel to stress corrosion cracking makes this material fit for purposes like Hot water boilers, brewing tanks and desalination, structure of swimming pools, etc.

Some of the advantages of using steel seamless pipes in the industry

Increased strength leading to saving of weight.
It has  better stress corrosion resistance
Price is lower as compared to other alloys
These pipes can handle a lot of pressure and adverse weather condition.

Reasons for Wide spread applications of steel pipes

Steel was invented around 100 years ago. The importance of steel has risen by leaps and bounds due to various reasons and attributes of steel. Steel does not get rusted easily and is light-weight as compared to Iron. It is durable, ductile, malleable, corrosion resistant and fire-resistant among scores of other benefits. All these features of Steel have made it the king of raw materials used in almost every industry. Steel is mostly used as structural steel which is the most preferred framework material for residential as well as non-residential construction. The steel beams and columns are the skeleton of the building and support the entire construction just like the bones in a body do. Angle bars, I-Beams, H beams, IPE etc. are some of the other structural elements requited in the construction. It is therefore clear that steel is indispensable in industries. The specially processed steel like galvanised steel has made steel more versatile and fit for various purposes. Some of the commonly used steel products are steel sections, steel pipe, steel tube, steel coil, steel sheet and steel plate. The process of galvanisation increases the strength and durability of steel. Steel has several grades and steel prices vary accordingly. Other types of steel are:

Galvanised steel
Galvalume Steel
Prepainted Steel
Hot rolled steel
Cold rolled steel
Stainless steel pipe and tubes are some of the most common application of steel which are used in most industries as well as household. Steel pipes are used as curtain and drapery rods, plumbing pipes, parts of the mechanical equipments and various other uses.
LSAW Carbon Steel Pipe
1. Line Pipe
Grade: A, B, X4-X80, L210-L255
Outside Diameter: 406mm-1626mm(16"-64")
Wall Thickness:6.4mm-32mm
Length: 3.0-12.3m
Standard: API 5L, GB/T9711, EN10208, ISO3183 etc

2.Structural pipes and Low pressure liquid delivery pipes
Grade: Q215-345, Grade A-E, Grade 1-3 STK290-540, S275JRH, S275JOH, S275J2H, S355JRH, S355JOH, S355J2H
Outside Diameter: 350mm-2400mm
Wall Thickness: 6mm-80mm
Length: 2.0-12m
Standard: ASTM A139, ASTM A53, ASTM A500, ASTM 672, ASTM A252, EN10219, JIS G3444 etc.
Uses: Used as low pressure liquid delivery pipes, variety of structral parts by the force and pressure as well as other purpose

2015年9月6日星期日

Convection Tubing


Overview

Convection tubing has been proven as an easy and inexpensive means of distributing heat or circulating air. The tubing helps create a better, healthier air mix, eliminates stale air pockets, cold and dry spots, and reduces humidity. In winter months the tubing can be used to direct heat to the area where it is most needed. The heat is dispersed evenly for a more comfortable environment. In hot weather, tubing reduces the temperature by continuous distribution of fresh air.

For greenhouse use, it is recommended you use tubing with an ulta violet inhibitor. Ultra violet tubing should be used where the sun is most intense, or wherever a longer lasting tube is desired.

Convection tubing can be used for ventilation of poultry barns, stock farm buildings, mushroom farms and industrial applications.

Versatility

Poly duct tubing is generally available in either a 4 or 6 mil thickness.

Single Line Punching

This is the most widely used system for heating and ventilation. Tubing can be punched to specialized needs to suit all known fan systems. There are many available hole sizes. Hole positioning can also be customized to direct the air flow where it is most needed.


Multi-Vent Punching

Multi-vent hole patterns create greater turbulence that increases air flow. There are no more vent holes than single-line punching but they are positiont to permit greater velocity and turbulence of air mix.  This type of punching results in a better air mix by distributing the air in several directions at one time. Results are a more exact temperature, humidity control and better growth.

Installation

Installation of poly tubing is relatively simple. It is recommended that you use sus-hoops for quick and easy hanging of poly duct tubing to an overhead wire. Sus-hoops are made of an extremely strong, tear resistant woven reinforced polyethylene. These hangars do not penetrate the plastic. They often outlast the tubing and are reusable. When installing these hangars, the first should be at least 10 feet away. Each sus-hoop thereafter should be placed not closer than 8 feet apart. The sus-hoop is merely brought around the tubing and fastened to the wire above with a sus-strap.
Tubing and Casing

Standard and technical conditions for supply
API SPEC 5CT
ISO 13680

Uses:
Tubing is used for extracting oil and gas from wells, while casing for sidewall. Casing serves as walls of a well.

Dimension:
Dimension of Tubing: OD 48.26-114.3mm WT 3.18-16mm Length R1 R2 R3
Dimension of Casing: OD 114.3-508mm WT 5.21-16.13mm Length R1 R2 R3

Grade:
H40, J55, K55, M65, N80, L80, C90, T95, C95, P110, Q125

Coupling:
1.Standard Coupling
2.Special Clearance Coupling
3.Special Bevel Coupling
4.API Modified Seal-Ring Coupling(sr13)
5.Combination Coupling or Reducing Coupling

Pup Joint or Connector:
All kind of sizes, thread or other combination of tubing and casing are supplied.

2015年9月1日星期二

Industries require DTH Drill Pipe for their Complex Drilling Works


To meet the drilling requirements of various industrial sectors, the need for drill pipes has become inevitable. Most of the industries like construction, mining, oil &gas require DTH drill pipes to accomplish their drilling activities. The specially designed drill pipes enable a core to be easily extracted out of earth's surface or rock. The entire length of the pipe seamlessly enters beneath the earth's surface and digs out the mass to obtain even drilled holes. The profitability of these industries depends upon the drilling efficiency of the drill pipes. Hence, it is very important for the industries to choose best designed drilling tools from reputable manufacturers.

The oil and gas industries utilize such drilling pipes, to effortlessly reach down to extreme surface of the ground surface. The oilfield drill pipe is drilled into the earth vertically by using the drilling rig and the oil is obtained effectively. Construction industries also make use of DTH drill pipe to bore tunnels under waterways or major roadways of a highly populated town. The resultant bore is thereby used for a variety of utility pipelines such as, fiber optic, water, electricity, oil and gas.

Get accustomed with the DTH drill pipe

DTH drill pipe is industrial tubular drilling equipment used to bore the ground surface. The most frequent application of this kind of tubular drilling tool is in the oil and gas industry. The DTH drilling pipe is provided with an external steel tube fabrication for greater longevity and higher working efficiency.

The effective features of best-designed DTH drill pipe are:

Strong and durable - The highly durable drill pipe is manufactured using high quality steel, which is composed of alloy containing chromium and molybdenum. A strong pipe can have higher longevity and can be used for extended period of time.

Cost-effectiveness - DTH drill pipes are cost-effective drilling equipment that enhances the productivity of various industries. The drilling tools can be used for various industrial applications.

Why professionals use DTH drill pipes for their extensive drilling tasks?

DTH drill pipes are manufactured and designed in such a manner that it can effectively reduce the hardships of the drilling worker. These drilling tools do come with effective features and specifications to fulfill the different requirements of the professionals. Plumbers may require drilling pipes, to dig large holes in studs and joists. This can ease out their job of installing drains and waste pipes, beneath the surface of the Earth. Also because the plumber is drilling large holes, up to 4 inches, the right angle drill pipe will accomplish his drilling needs efficiently.
Drill Pipes
Standard and technical conditions for supply
API SPEC 5DP
Uses:
For well drilling
Note:
1.EU-External Upset IEU-Internal-External Upset IU-Internal Upset
2.Threads of tool joins are left-hand or right-hand
3.Threads are cooper-plated or phosphated
Grade:
E75, X95, G105, S135
The wear-resistant belt of tool joint:
Arnco 100XT, 200XT, 300XT, 400XT
Internal Coating:
TK34, DPC, TC2000, TC3000