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Zhangjiagang Bonded Area Henglong Steel Tube Co., Ltd.
Zhangjiagang Bonded Area Yaxin Precision Tube Co., Ltd. Zhangjiagang Bonded Area Henglong Steel Tube Co., Ltd. Steel Tubing for Automotive Powertrain, Shock Aborber, Steering And Steel Tubing for Heat
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DIN2391 ST37.4, ST52.4 bright annealed and bright normalized seamless cold drawn steel tube

Zhangjiagang Bonded Area Henglong Steel Tube Co., Ltd.
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Zhangjiagang Bonded Area Henglong Steel Tube Co., Ltd.
City: Taiwan
Province/State: Taiwan
Country/Region: China
Tel: 86-512-5832-8328
Contact Person:
Mr John Chen

DIN2391 ST37.4, ST52.4 bright annealed and bright normalized seamless cold drawn steel tube

Brand Name : YAXIN
Certification : ISO/TS16949, ISO9001, OHSAS18001
Place of Origin : China
MOQ : 1000kg
Price : 1000 us dollars per metric ton
Payment Terms : L/C, T/T
Supply Ability : 500 metric tons per month
Delivery Time : 30 days
Packaging Details : Waterproof material wrapped, wooden case packing
Material : ST37.4, ST52.4
Surface : oiled, black phosphated, zinc coated
Shape : round
Application : automotive, hydraulic line tubing, machinery
Delivery condition : +C, +LC, +SR, +N, +A
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DIN2391 ST37.4, ST52.4 bright annealed and bright normalized seamless cold drawn steel tube


Process:

Cold drawn, seamless tube


Steel grades:

ST37.4 (E235N)

ST52.4 (E355N)


Dimensional range:

Outside diameter: 4-30mm

Wall thickness: 0.5-10mm

Length: standard 6000mm or on request


- If one of the limit deviations for the diameter is to be zero, the limit deviation for the wall thickness shall be equal to 10% of the mean wall thickness calculated using the formula given in clause 2 of DIN2391 Part 1.


Delivery condition:

BK, BKW, BKS, GBK, NBK


Appearance:

- Tubes have a smooth internal and external surface

- Surface imperfections such as scabs or gouges resulting from the manufacturing process, are not permitted provided the inner and outer diameters. Laps and laminations are also not permitted.


Test and inspection:

- Eddy current test

- Ultrasonic test

- Hardness

- Flattening, as specified in DIN EN 10233

- Flaring

- Bending

- Chemical composition analysis

- Mechanical properties (tensile, yield, elongation), as specified in DIN EN 10002 Part 1

- Metallographic analysis


In compliance with commercial practice, the tubes shall be supplied with provisional corrosion protection:

- Coated oil

- Black phosphated

- Zinc coated


Straightness:

- Tubes with an outside diameter exceeding 15mm shall not deviate from straightness by more than 0.25% oft he total length

- Tubes with a yield strength greater than 500N/mm2 shall be deviate from straightness by more than 0.3% of the total length

- Localized deviations shall not exceed 3mm/m and shall be measured as the distance between the tube surface and a chord linking two random points 1000mm apart


Packing:

Wooden case



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DIN2391 ST37.4, ST52.4 bright annealed and bright normalized seamless cold drawn steel tube Images

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