E355 Seamless Cold Drawn Stee Tube 355MPA​

DIN2391 St52 NBK / EN10305-1 E355 +N Precision Seamless Steel Tube

O.D.: 6-88mm, W.T.:1-15mm,

Length: 5.2-5.8M random length, 5.5M fixed length, 5.8M fixed length

Size Tolerance: O.D.±0.15mm, I.D.±0.15mm

Material: St52 (DIN2391), E355 (EN10305-1)

Delivery Condition: NBK(DIN2391), +N(EN10305-1)

Normalized(NBK/+N): The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere.

With such heat treatment: Tube surface can be free of oxide scale, bright and clean.

Production Process: Cold Drawn + Heat Treatment ( NBK / +N)

We control stable tube mechanical property, Especially stable Yield Strength ≥ 355 MPA.

Tube after necking or bending, None of crack, scratch or other surface problems.

Chemical Composition & Mechanical Property

Material Name	DIN2391 St52 NBK	EN10305-1 E355 +N
chemical analysis	C:≤0.22;Si: ≤0.55;Mn: ≤1.60; P: ≤0.025; S: ≤0.025	C:≤0.22;Si: ≤0.55;Mn: ≤1.60; P: ≤0.025; S: ≤0.025
Tensile Strength	490-630Mpa	490-630Mpa
Yield strength	≥355MPa	≥355MPa
Elongation	≥22%	≥22%
Normal Size for Steering Drag Link	30*3.7mm, 38*4.7mm 46*5.5mm, 48*5mm 50*6mm, 52*7mm 60*6mm, 62*6mm

100% Eddy Current Testing.
100% Size Tolerance Checking.
100% Tube surface checking to avoid surface defects.

With many years of exporting steering drag link steel tubes, we have a great experience of producing this kind of tubes.

We select high quality of raw material (Zhongtian steel, Huai steel), then with traceable production, to make sure each tube supplied by us is meet the requirements of DIN2391/EN10305-1 Standard requirement, and also customer's special requirements.

Welcome to contact us!

Tags: DIN2391 St52 NBK, Preicision Seamless Steel Tube, DIN2391 Steel Tube, NBK steel tube, Drag Link steel tube, DIN2391 St52 steel tube, EN10305-1 E355 +N, EN10305-1 Steel Tube, Drag Link Steel Tube E355, Cold Drawn Steel Tube, Seamless Precision Cold Drawn Tube.

Zhejiang New Era Steel Tube Technology Co., Ltd is one of the best seamless steel tube products manufacturer and exporter in china. Our main products include cold drawn and cold rolled seamless steel tubes .We can manufacture non-standard and special application tubes, also according to the international standards as well. Ningbo Pipeway Trade Co.,Ltd is our branch company for all internation business service for our company.

Our Production equipments including 16 cold drawing lines and 22 cold rolled machines:

We have full testing equipments for different kinds of testing for steel tubes:

Our products can produced as DIN,ASTM,ASME,EN,JIS,BS,GB,GOST,ISO etc international standard 

Precision steel tubes:DIN2391 st52/A519 4130 4140 1026/EN10305-1 E355+N/EN10305-4 E235+N

Boiler steel tubes:ASTM A192/A179/A210 Gr.A/A213;DIN17175 st35.8/EN10216

Seamless Mechanical tubes: ASTM A519, EN10297-1/EN10210 S355J2H

Wire line Drill Rods:BQ,NQ,HQ,PQ XJY750,XJY850 4130+SR 1541

Oil and Gas line pipes:API 5L Grade B,A106 Gr.B,A53 Gr.B,API 5D

Stainless Steel tubes 304,304L,316,316L

Steel pipes and tube Size range:OD 4-300mm,Wt:0.5-30mm

We have 15 years experience of exporting steel tubes and steel pipes , main exporting to American, Europe, Asian, Australia, Africa .

We have cerficate of ISO9001,TS16949,TUV/PED for different market demand: