Stainless Steel Pipe

ASTM A106

ASTM A106 seamless pressure pipe (also known as ASME SA106 pipe) is commonly used in the construction of oil and gas refineries, power plants, petrochemical plants, boilers, and ships where the piping must transport fluids and gases that exhibit higher temperatures and pressure levels. All forged ASTM A106 GR. B Carbon Steel Seamless Pipes should be solution annealed according to the heat treatment section to restore the ferrite – austenite equilibrium. The weld metallurgy of ASME SA 106 GR. B Carbon Steel Welded Pipes, as with other ferrite – austenitic stainless steels, has a ferrite structure during solidification. And when the weld metal temperature of ASTM A106 GR. B Carbon Steel EFW Pipes is in the 2100 Degree F to 2640 Degree F (1150 Degree C to 1450 Degree C) range, it is possible for the HAZ to increase its ferrite content. It is the cooling of the high temp ferrite of ASME SA 106 GR. B Carbon Steel ERW Pipes that allows retransformation into austenite, yielding a ferrite – austenite weld structure. Cooling rates of ASTM A106 GR. B Carbon Steel Round Pipes are extremely important as getting the weld area too hot, or using too much weld energy, leads to cooling rates being too slow, allowing the formation of embrittling sigma phase in the heat affected zone. Conversely, if not enough weld energy is used in ASME SA 106 GR. B Carbon Steel Square Pipes, then the cooling rates are too fast, leading to too much ferrite in the weld metal and a fragile weld joint.

Note:-

The minimum wall thickness at any point shall not be more than 12.5% under the nominal wall thickness specified. Weight of any length shall not vary more than 10% over and 3.5% under that specified. NOTE — NPS 4 and smaller — weighed in lots. Larger sizes shall be weighed separately by length.

Doshi Piping Products stocks a full range of A106 pipe (SA106 Pipe) in:

Grades B and C

NPS ¼” to 30” diameter

Schedules 20 through XXH

Wall Thickness beyond XXH, including:

– Up to 4” wall in 20” through 24” OD

– Up to 3” wall in 10” through 18” OD

– Up to 2” wall in 4” through 8” OD

CS A106 Pipes Application Industries

 Off-Shore Oil Drilling Companies

Power Generation

Petrochemicals

Gas Processing

Specialty Chemicals

Pharmaceuticals

Pharmaceutical Equipment

Chemical Equipment

Sea Water Equipment

Heat Exchangers

Condensers

Pulp and Paper Industry

Stainless steels are high-alloy steels, which have high corrosion resistance when compared to other steels due to the presence of large amounts of chromium. Based on their crystalline structure, they are further divided into ferritic, austenitic, and martensitic steels. Another group of stainless steels are known as precipitation-hardened steels. They are the combination of martensitic and austenitic steels.

Grade 201 stainless steel has good formability, corrosion resistance, and fabricability. It is similar to that of 301 stainless steel.

Grade 201 stainless steel is annealed at 1010-1093°C (1850-2000°F). Temperature should not be exceeded above 2000°F in order to avoid scaling. It is rapidly cooled to prevent crystallization of carbides.

Grade 201 stainless steel is used in structural members, different kinds of severely formed parts, and siding and roofing for railway cars and trailers.

Spiral welded pipe is a low carbon carbon structural steel or a low alloy structural steel strip rolled into a tube blank with a certain helix angle (also called forming angle), and then welded and made into a pipe joint, which can use a narrow strip steel Production of large diameter steel pipes. Spiral welded pipe is a low carbon carbon structural steel or a low alloy structural steel strip rolled into a tube blank with a certain helix angle (also called forming angle), and then welded and made into a pipe joint, which can use a narrow strip steel Production of large diameter steel pipes. Spiral welded pipe is mainly spiral submerged arc welded pipe (SSAW), which is frequently used in the construction of various gas pipelines The welded pipe shall ensure that the hydraulic test and the tensile strength and cold bending performance of the weld are in compliance with the regulations. The strength of the spiral welded pipe is generally higher than that of the straight welded pipe. The main production process is submerged arc welding. The spiral welded pipe can produce welded pipes with different pipe diameters with the same width of blanks, and can also produce welded pipes with larger diameters with narrow blanks.

Spiral Welded Pipes Available in Outside Diameter Range from 18″ to 100″, with Length of 6 Meters to 12 Meters, and in thickness up to 25mm

IS: 3589, Fe. 330/410 & API 5L Gr. up to X80 PSL2

Square Steel tube is strong, tough and durable. It can also be rectangular. Steel tubing often incorporates different alloys such as aluminum, manganese, titanium and tungsten. Its versatility lends it to a range of applications in different industries. Each year millions of tonnes of steel tubing is produced.
Steel tubing can be welded or seamless. Seamless tubes are made by passing the molten steel over a piercing rod to create a hollow tube. Welded tubes are made from curling a rolling plate and welding the seam together. In the past, seamless tubes were stronger than welded tubes. However advances in technology have allowed welded tubes to have sufficient strength to replace welded tubes for many applications.
Rectangular and square HSS are also commonly known as tube steel or box section. Circular HSS are sometimes mistakenly called steel pipe, although steel pipe is actually dimensioned and classed differently from HSS. (HSS dimensions are based on exterior dimensions of the profile; pipes are also manufactured to an exterior tolerance, albeit to a different standard.) The corners of HSS are heavily rounded, having a radius which is approximately twice the wall thickness. The wall thickness is uniform around the section.
Applications For Square Steel Tube
Square Steel tubes are widely used in industrial and domestic settings.  In industry, steel tubes are valued for their strength and ability to withstand extremes of temperature, pressure and destructive elements. In domestic settings, steel tubes are used in appliances and gas pipes. If you look behind your refrigerator you’ll likely see some steel tubing.         
Top steel tubing applications include:
Construction and Engineering
Automobile Manufacturing