China ASTM 304 310S 321 SMLS Stainless Steel Pipe Suppliers, Manufacturers, Factory

Product Details

Brief Introduction

SMLS Steel Tube

Types	Application
Structure Purposes	General structure and mechanical
Liquid Services	Petroleum, gas and other fluids conveying
Low and Medium Pressure	Steam and boiler manufacturing
Hydraulic Pillar Service	Hydraulic support
Auto Semi-shaft Casing	Auto sem-shaft casing
Line Pipe	Oil and gas conveying
Tubing and Casing	Oil and gas conveying
Drill Pipes	Well drilling
Geological Drilling Pipe	Geological drilling
Petroleum Cracking Tubes	Furnace tubes, heat exchangers

Standard of carbon seamless steel pipe

Standard	Grade	Chemical Components (%)					Mechanical Properties
ASTM A53	Grade	C	Si	Mn	P	S	Tensile STrength(Mpa)	Yield STrength(Mpa)
	A	≤0.25	-	≤0.95	≤0.05	≤0.06	≥330	≥205
	B	≤0.30	-	≤1.2	≤0.05	≤0.06	≥415	≥240
ASTM A106	A	≤0.30	≥0.10	0.29-1.06	≤0.035	≤0.035	≥415	≥240
ASTM A106	B	≤0.35	≥0.10	0.29-1.06	≤0.035	≤0.035	≥485	≥275
ASTM A179	A179	0.06-0.18	-	0.27-0.63	≤0.035	≤0.035	≥325	≥180
ASTM A192	A192	0.06-0.18	≤0.25	0.27-0.63	≤0.035	≤0.035	≥325	≥180
API 5L PSL1	A	0.22	-	0.90	0.030	0.030	≥331	≥207
	B	0.28	-	1.20	0.030	0.030	≥414	≥241
	X42	0.28	-	1.30	0.030	0.030	≥414	≥290
	X46	0.28	-	1.40	0.030	0.030	≥434	≥317
	X52	0.28	-	1.40	0.030	0.030	≥455	≥359
	X56	0.28	-	1.40	0.030	0.030	≥490	≥386
	X60	0.28	-	1.40	0.030	0.030	≥517	≥448
	X65	0.28	-	1.40	0.030	0.030	≥531	≥448
	X70	0.28	-	1.40	0.030	0.030	≥565	≥483
API 5L PSL2	B	0.24	-	1.20	0.025	0.015	≥414	≥241
	X42	0.24	-	1.30	0.025	0.015	≥414	≥290
	X46	0.24	-	1.40	0.025	0.015	≥434	≥317
	X52	0.24	-	1.40	0.025	0.015	≥455	≥359
	X56	0.24	-	1.40	0.025	0.015	≥490	≥386
	X60	0.24	-	1.40	0.025	0.015	≥517	≥414
	X65	0.24	-	1.40	0.025	0.015	≥531	≥448
	X70	0.24	-	1.40	0.025	0.015	≥565	≥483
	X80	0.24	-	1.40	0.025	0.015	≥621	≥552

GB standard	Seamless steel pipe for structural purpose	GB/T8162-2008
	Seamless steel pipe for liuid service	GB/TB8163-2008
	Seamless steel tubes for low and medium boiler	GB/3087-1999
	Seamless steel tubes for high pressure boiler	GB/5310-1995
	Seamless carbon steel marine tubes	GB/T5312-1999
	High-pressure seamless steel tubes for chemical fertilizer equipments	GB/6479-2000
ASTM standard	Black and hot-dipped zinc-coated steel pipes welded and seamless	ASTM A53
	Seamless carbon steel for high temperature service	ASTM A106
	Seamless cold-drawn low-carbon steel heat exchanger and condenser tubes	ASTM A179
	Seamless carbon steel boiler tubes for high pressure	ASTM A192
	Seamless Medium-carbon boiler and superheater tubes	ASTM A210
	Seamless carbon for mechanical tubing	ASTM A519
API standard	Seamless steel pipe for casing	API Spec 5CT
API standard	Seamless steel pipe for line pipe	API Spec 5L
DIN standard	Seamless steel tube for elevated temperture	DIN 17175
	Cold drawn seamless prevision pipe	DN2391
	Seamless circular unalloyed steel tubes subject to special requirements	DIN 1629

Tolerances of carbon seamless steel pipe

Pipe types	Pipe sizes(mm)	Tolerances
Hot rolled	OD<50	±0.50mm
	OD≥50	±1%
	WT<4	±12.5%
	WT 4～20	+15%, -12.5%
	WT>20	±12.5%
Cold drawn	OD 6～10	±0.20mm
	OD 10～30	±0.40mm
	OD 30～50	±0.45
	OD>50	±1%
	WT≤1	±0.15mm
	WT 1～3	+15%, -10%
	WT >3	+12.5%, -10%

ASTM A53 seamless steel tube

ASTM A53 seamless steel tube refers to the foreign standard steel tube grade, which is also known as American brand number.A53-f corresponds to q235 material in China, a53-a to 10# material in China, and a53-b to 20# material in China.Hot rolled steel pipe delivered in hot rolled or heat treated condition;Hot rolled seamless steel tube production process: tube heating perforation three roll cross rolling,

continuous rolling tube release sizing cooling straightening hydraulic test marking warehousing lever effect seamless steel tube, will be detected.Production process of cold-drawn seamless steel tube: tube blank heating punching punching annealing pickling oil painting multiple cold-drawn billet tube heat treatment straightening hydraulic test marking warehousing.In terms of wall thickness, cold-drawn seamless steel tube is better than hot-rolled seamless steel tube in uniform merger and reorganization, and the surface roughness is better.

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