• Jiangsu Hongbao Group Co., Ltd.
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Phone Number : 86-512-58715276
Whatsapp : +8615895686919

Cold Drawn Precision Steel Tube Round Material DIN2391 E355 For Shipbuilding

Place of Origin Jiangsu, China
Brand Name Hongbao
Certification TS16949,DNV,PED,ISO,TUV,LR
Model Number HBPST-1
Minimum Order Quantity 1 ton
Price Negotiable
Packaging Details seaworthy plywooden case packing.
Delivery Time Within 50 days if production
Supply Ability 30000MT per year

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Whatsapp:0086 18588475571

Wechat: 0086 18588475571

Skype: sales10@aixton.com

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Product Details
Material ST37.4,ST52.4,E235,E355,26MnB5,34MnB5 Brand Hongbao
Certificate TS16949,DNV,PED,ISO,TUV,LR Origin Jiangsu,China
OD 6-120mm Thickness 0.5-15mm
Length 18000mm Max. Shape Round
High Light

precision steel pipe


precision seamless tubing

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Product Description

DIN2391 E355 Cold Drawn Welded Precision Steel Tube Round Precision Steel Pipe



Material Carbon Steel ASTM A519 Standard

MT1010, MT1020, 1008, 1010, 1018, 1020,

1025, 1030, 1045, 1518

JIS G3445 Standard



JIS G3473 Standard STC370, STC440, STC510A, STC510, STC540
DIN 2391 Standard St 35, St45, St52
EN 10297-1 Standard E235, E275, E315, E355, E470
EN 10305-1 Standard E215, E235, E355
EN 10305-4 Standard E215, E235, E355
BS 6323-3 Standard HFS 3, HFS 4, HFS 5, HFS 8
NF A49-311 TU 37-b, TU 52-b, TU 56-b, TU XC35
Alloy Steel ASTM A519 Standard 1345, 3140, 4130, 4135, 4140, 4150, 4320, 4340, 5120, 5130
JIS G3429 Standard STH11, 12 STH21, 122 STH31
JIS G3441 Standard SCR420TK, SCM415TK, SCM418TK, SCM420TK, SCM430TK, SCM440TK
Stainless Steel ASTM A511 Standard MT304, MT304L, MT310S, MT316, MT316L, MT317, MT321, MT347, MT403, MT410, MT431
ISO Standard NACE MR-0175




  Size Range Tolerance
OD 6-325mm -0.035 -- +0.045mm
ID 2-250mm ±0.035mm
WT 1-32mm depends on sizes
Length random or fixed length +0-3.5mm
Straightness 0.15:1000, 0.4:1000, 0.5:1000 1:1000 or customized
Surface Roughness Ra 0.02—0.4μm


Our company main product all kinds of cold drawn precision welded steel tube and hydraulic precision cylinder tube. We have about 20 years experience of the steel production.

Application: Widely used in Machinery, Automotive & Aerospace Industry,Bicycles, Furniture, Apparatus, other mechanical parts and structures and so on.


Delivery condition of seamless cold drawn mechanical tubing

1. BK (+C) Cold finished/hard (cold finished as drawn).

2. BKW (+LC) Cold finished/soft

3. BKS (+SR) Cold finished/stress relieve annealed.

4. GBK (+A) Annealed.

5. NBK (+N) Normalized.

 Round Cold Drawn Welded Precision DOM Steel Tube are manufactured according to technical specification of EN10305-2 Cold Drawn Welded Precision Steel Tubes DOM tubing, with steel grade of E155,E195,E235,E275,E355 and delivery conditions of +C +LC +SR +A +N