DIN 2391 Seamless Steel Pipe

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Seamless steel pipe

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Besides exhibiting high precision, these products tend to have a good surface quality and great straightness as well. There are several specifications that cover high precision tubes including – din 17175, EN 10305-1 and din 2391. Another fitting advantage of using the specification is that the inner diameter of various steel grade Precision Seamless Tubes could be constructed into a hexagon shaped one.Furthermore, the performance of these steel High precision Tubes tends to be superior, with the metal becoming relatively dense.

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Product Details

DIN 2391 Seamless Steel Pipe Advantage

There is no oxide layer on the inner and outer walls of the steel pipe and can be directly installed in the hydraulic system.
Withstand high pressure without leakage
High precision
high finish
Cold bending without deformation
Expanding and flattening without cracks

DIN 2391 Seamless Steel Pipe Chemical Composition

Speci -cation	Grade	Chemical Composition [%]
		C		Mn		P	S	Si		Cr		Mo		Cu	Ni	V
		C		Mn		P	S	Si		Cr		Mo		Cu	Ni	V
		Min	Max.	Min	Max.	Max.	Max.	Min.	Max	Min.	Max	Min.	Max	Max	Max	Max
DIN 2391	St - 45	-	0.17	0.4	-	0.025	0.025	-	0.35	-	-	-	-	-	-	-
	St - 45	-	0.21	0.4	-	0.025	0.025	-	0.35	-	-	-	-	-	-	-
	St - 52	-	0.22	-	1.6	0.025	0.025	-	0.55	-	-	-	-	-	-	-

DIN 2391 Seamless Steel Pipe Mechanical Property

Speci -cation	Grade	Mechanical Properties
		Yield Strength		Tensile Strength			% Elongation (G.L. 50 mm WT 8 mm) e (min.)
		Min.		Min.
		PSI	MPa	PSI	MPa
DIN 2391	St - 45	NBK : 215 / GBK : -		NBK : 340 / GBK : 315		NBK : 470
	St - 45	NBK : 255 / GBK : -		NBK : 440 / GBK : 390		NBK : 570
	St - 52	NBK : 355 / GBK : -		NBK : 490 / GBK : 490		NBK : 630

DIN 2391 Seamless Steel Pipe Specification

Product name	Seamless pipe; SMLS steel pipes
Standards & Grades	GB/T8162 20#, 35#, 45# Q345, Q345B, Q345C, Q345D, Q345E, 20Mn2, 30Mn2, 40Mn2, 20CrMo, 30CrMo, 35CrMo, 42CrMo; GB/T8163 20#; GB/T3087 10#, 20#; GB/T5310 20G, 20MnG, 25MnG, 15CrMoG, 12Cr1MoVG; GB/T9948 20#, 16Mn,12CrMo, 15CrMo; GB6479 20#, 16Mn, 12CrMo, 15CrMo; ASME SA213 T5, T9; API 5L, A, B, X42, X46, X56, X60, X65; ASTM A106, ASTM A53 Gr B; SA210, SA178, SA192, SA335, T2/P2, T11/P11, T12/P12, T22/P22, T91/P91; DIN 17175 ST35.8, ST45.8, DIN1629; API 5L Gr.B, X42-X70; ISO 11960, GOST, API 5CT J55 K55 N80-1 N80-Q L80-1 L80-9Cr P110, etc.
Structural pipe	20# 35# 45# Q345B, 16Mn, Q345B-E, 20Mn2, 25Mn, 30Mn2, 40Mn2, 45Mn2, SAE1018, SAE1020, SAE1518, SAE1045.
Liquid pipe	20# q295b-e, q345b-e
High pressure boiler tube	20G 15MnG 20MnG 15CrMoG, 12Cr1MoVG St35.8, sa106b, sa106c, sa210a, sa210c, A333P2, A333P11, A33P12, A333P22, A33P36, A333P91, A333P92, A335T2, A335T11, A335T12, A335T22, A335T91, A335T23, A335T9
Pipeline	API SPEC 5L, X42, X52, X60, X65,X70,X80 ASTMA53, ASTM A106, ASTM A333, BS301, BS3602, BS3603, BS3604, PSL1, PSL2, DNV-OS-F101, CSA-Z245
Alloy pipe	4140, 42CrMo, 32CrMo, 15CrMo
Outer Diameter	10~630mm
Wall Thickness	2.5~50mm
Length	5.8m, 6m, 11.8m, 12m, Random length, or as required
Delivery conditions	N-(normalizing); A-(annealing); T-(tempering); Q-(quenching); N+T; Q+T.etc
Processing	Galvanizing; cutting; making thread outside the pipe; Machining.
Ends	Flat end or beveled end, threaded end. Protected by plastic caps or steel rings
Packing	Black paint, Varnish painting, Tarpaulin packing
Packing	Standard export packaging, suitable for various modes of transportation,Or provided on request.
Pricing Term	Ex-Work,FOB,CNF,CFR,CIF,FCA etc.
Payment term	TT, L/C, Western Union, etc.
MOQ	1 Ton

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Other Types

ASTM A53 Seamless Steel Pipe	EN 10216-1 Seamless Steel Pipe
ASTM A106 Seamless Steel Pipe	EN 10216-2 Seamless Steel Pipe
ASTM A333 Seamless Steel Pipe	DIN 2391 Seamless Steel Pipe
ASTM A334 Seamless Steel Pipe	ASTM A-519 Seamless Steel Pipe
EN 10305-1 Seamless Steel Pipe	ASTM A179 Seamless Steel Pipe
EN 10305-4 Seamless Steel Pipe	ASTM A192 Seamless Steel Pipe