Stainless Steel Pipe

Stainless steel pipe is a kind of hollow strip steel, which is widely used for conveying fluids, such as oil, natural gas, water, gas, steam, etc. In addition, when bending and torsion strength are the same, the weight is lighter, so it is also widely used in manufacturing mechanical parts and engineering structures. It is also often used in the production of conventional weapons, barrels, shells and so on.
Stainless steel pipe can be divided into stainless steel seamless pipe and stainless steel welded pipe.

• Stainless steel seamless pipe
• Stainless steel welded pipe

Seamless stainless steel pipes, also known as stainless steel seamless pipes, are made of steel ingots or solid billets through perforation, and then hot-rolled, cold-rolled or cold-drawn. The specification of seamless steel pipe is expressed by millimeter number of outer diameter * wall thickness.
The blank used for welded steel pipe is steel plate or strip.

Stainless Steel Welded Pipe

Pipe Type: Stainless Steel Pipe, Stainless Steel Tube, Stainless Steel Tubing
Application: In Chemical Industry, Coal, Oil Field Open Machine, Building Materials Heat-resistant Parts
Specification:
Outside Diameter: 1 1/8”~36”
Wall Thickness: SCH 5, SCH 10S, SCH 40S, SCH 80S
Standard: ASTM A240, ASTM A269, ASTM A312, ASTM A358, ASTM A778
Steel Grades: 304, 304/L, 304H, 310/S, 310H, 316, 316L, 321, 321H
Surface: Annealed, Pickling, Polished
Packing: Waterproof Paper Wrapped, Packed in Wooden Cabins

welding stainless steel sus304 condenser pipes 2 inch boiler tube
Standard	OD(mm)	WT(mm)	Length(meters)	Grade
ASTM A249, ASTM A269,  EN 10217-7	15.88 to 114.3	0.3 to 4.0	Up to 18.3 meter	1.4301, 1.4306, 1.4404,  AISI 304/304l/316l, S31803/S32205, etc
Standard	Outside Diameter		Thickness	Length
ASTM A249 (A1016)	<25.4	±0.10	±10%S	OD<50.8+3-0 OD≥50.8+5-0
	≥25.4~<38.1	±0.15
	≥38.1~<50.8	±0.20
	≥50.8~<63.5	±0.25
	≥63.5~<76.2	±0.31
ASTM A269 (A1016)	<38.1	±0.13	OD<12.7±15%  OD≥12.7±10%	OD<38.1+3.2-0 OD≥38.1+4.8-0

Characteristics

First, the small-diameter stainless steel welded pipe is continuously produced online. The thicker the wall thickness, the greater the investment of the unit and the welding equipment, and the less economical and practical it is. The thinner the wall thickness, the lower the input-output ratio will be. The process of the product determines its advantages and disadvantages. Generally, the welded steel pipe has high precision, uniform wall thickness, and high brightness inside and outside the pipe (the steel pipe is determined by the surface grade of the steel plate). Surface brightness), can be arbitrarily fixed. Therefore, it demonstrates its economy and aesthetics in high-precision, medium- and low-pressure fluid applications.
Welding characteristics
According to the welding technology, it can be divided into automatic welding and manual welding. Automatic welding generally uses submerged arc welding and plasma welding, and manual welding generally uses argon arc welding.
Classification
According to the weld form, it is divided into straight welded pipe and spiral welded pipe.
According to the application, it is divided into general welded pipe, heat exchanger pipe, condenser pipe, galvanized pipe, oxygen-oxygen welded pipe, wire casing, metric welded pipe, idler pipe, deep well pump pipe, automobile pipe, transformer pipe, electric welding thin wall. Tube, welded profiled tube and spiral welded pipe.

Stainless Steel Seamless Pipe

Pipe Type: Stainless Steel Pipe, Stainless Steel Tube, Stainless Steel Tubing
Application: In Chemical Industry, Coal, Oil Field Open Machine, Building Materials Heat-resistant Parts
Specification:
Outside Diameter: 1/8”~24”
Wall Thickness: SCH 5 ~ Double Extra Heavy
Standard: ASTM A213, ASTM A269, ASTM A312, ASTM A358, ASTM 813
Steel Grades: 304, 304L, 310/S, 310H, 316, 316L, 321, 321H
Surface: Annealed, Pickling, Polished
Packing: Waterproof Paper Wrapped, Packed in Wooden Cabins
Production Process

Chemical Composition

Grades	C max	Mn max	P max	S max	Si max	Cr	Ni	Mo
304	0.08	2.00	0.04	0.03	0.075	18.00-20.00	8.00-11.00	/
304L	0.035	2.00	0.04	0.03	0.075	18.00-20.00	8.00-13.00	/
316	0.08	2.00	0.04	0.03	0.075	16.00-18.00	11.00-14.00	2.00-3.00
316L	0.035	2.00	0.04	0.03	0.075	16.00-18.00	10.00-15.00	2.00-3.00

Mechanical Properties

Grades	Itemper	Tensile Psi	Yield Psi	Elong %	Rockwell Hardness
304	Annealed	85000-105000	35000-75000	20-55	80-95
304L	Annealed I1/8 Hard	80000-105000	30000-75000	20-55	75-95
316	Annealed	85000 min	35000 min	50 min	80 min
	Annealed	80000 min	30000 min	50 min	75 min