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

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

Zhangjiagang Bonded Area Yaxin Precision Tube Co., Ltd.

Zhangjiagang Bonded Area Henglong Steel Tube Co., Ltd.

Long-term adherence strict quality control, uphold the "scientific management to create first-class products, promote the comprehensive development of continuous improvement, quality service to win customer satisfaction," the quality and continuously forge ahead, creating enterprise independent quality brand; uphold the integrity of the first with partners closely aligned. We sincerely hope that the friendly cooperation with the community, work together!

Zhangjiagang bonded zone Yaxin precision pipe making Co., Ltd., Zhangjiagang bonded zone Yaxin Auto Parts Technology Co., Ltd.

Zhangjiagang Free Trade Zone Yaxin Precision Steel Pipe Co.,Ltd.and Zhangjiagang Free Trade Zone Yaxin Auto Parts Technology Co.,Ltd.is a Sino-foreign joint venture company,established in 1999,located at Taiwan Road,Free Trade Zone,Zshangjiagang City,jiangsu Province.It is borderend by international mertropolis city-Shanghai to the east,the beautiful ancient city Suzhou to the south ,jiangyin Changjiang River Bridge to the west ,and international port-Zhangjiagang port to the north.The company covers the area of 200000㎡，of which constructiong area is 8500㎡ ,is has 15 million U.S.dollars (about 96 millon RMB)of registered capital,260million RMB of fixed assets,and its annual output is 30,000 tons of precision seamiess steel pipe ,precision welded pipe 50,000 tons.The company currently employs 500 people ,of which more than 60 have higher education ,more than twenty have senior titles or above .Our main products are cold rolled and cold drawn precision seamless steel pipes ,of which more steel pipes for automobile,Precision welded pipe for automobile.
The company has eamed great reputation among many well-known large business customers by our modern hardware facilities,independent designed special mould and unique production process;and by our standardized managenmen and strict management procedures;and by our business philosophy of"Honesty ,cooperation andcommon development".Our products are widely used by Shanghai Huizhong Sachs Shock Absoorber Co.,Sacths Automotive Components Systems (shanghai)Co.,Ltd.,ZF Chassis Technology-rich Mining Austria (Changchun)Co.,Ltd.,dongfeng ZF Shock Absonrher Co.,Ltd,Shanghai Huizhong Automotive Manufactuing Co.,Ltd.,FAW Tokico Shock Absorber Ltd.,Zhuzhou Nanfang Yamaha Shock Absorter Co.,Tenneco(Beijing)Co.,Ltd.
The company passed the ISO9001 quality system certification in 2008 ,obtained Special equipment manufacturing license(TS2710J44-2013)in 2009,Passed PED certified of TUV NORD in 2011,passed ISO14001 and OHSAS18001 management system certification of DNV in 2012,and was rated as a high-tech enterprise in 2013.Under the fierce market competition ,the company closely centers around the quality policy of"creating first-class products by scientific management,promoting overall development by contstant improvement and satisfying to the custorners"tokeep forging ahead ,further perfecing all kinds of equipments to dvelop the high quality brand for the company.
The company sincerely hopes that we can get friendly cooperation with all circles of the community.

Zhangjiagang Bonded Area Henglong Steel Tubes Co., Ltd.

Zhangjiagang Bonded Area Henglong Steel Tubes Co., Ltd. is a Sino-foreign joint ventrue company,estabilshed in 1999,located at Taiwan Road,Free Trade Zone,Zhangjiagang City,Jiangsu Province.It is bordered by internationgal metropolis city-Shanghai to the east,the beautiful ancient city Suzhou to the south ,Jiangyin Changjiang River Bridge to the west ,and internationgal port-Zhangjiagang port to the north .It embraces convenient land and water transportation,hospitable weather,god-blessed land rich in culture and talented people .Thereby the company enjoys a great geographical advantage.The company covers the area of 200000㎡，of which construction area is 8500㎡.It has 15 million U.S.dollars (about 96 million RMB)of registered capital,260million RMBof fixed assets,and its annual output is 145,000 tons of seamlell steel pipes.
The Company specializes in producing various types of steel,such as10、20、20G、35、45、16Mn、ST52、40Cr、37Mn5、D9MnD、40Mn2、15CrMoG、12Cr1MoVG、08Cr2ALMo、12CrMo1、T11、T12、T22、T23、T5、T9、SA179、SA192、SA106B、SA210C.Main prouducts are different types of seamless steel pipes ,for example ,steel pipes for structure,fou transmission fluid,for low and medium pressure boiler,for petrleum cracking ,for high pressure fertilizer equipment ,high pressure boiler.The outer diameter of the pipe is from 6 to 133mm,wall thickness is from 0.5 to 16mm.Our products are widely used in industry of machinery manufacturing ,ship engineering ,petrochemical,and pressrue boiler.
The company has eamed great reputaion among many well-known large business customers by our modern hardware facilities,independent designed sepcial mould and unique production process;and by our standardized management and strict management procedures;and by our business philosophy of"Honesty,cooperation and common development".
The company passed the ISO9001 quality system certification in 2008,obtained Special Equipment Manufacturing License(ts2710j44-2013)in 2009,passed PED certified of TUVNORDin2011,passed ISO14001and OHSAS18001management system certification of DNV ,AND was rated as a high-tech enterprise in2012.Unedr the fierce market competition,the company closely centers around the quality policy of"creating first-class products by scientific management ,promoting overall development by constant improvement and satisfying the customers"to keep forging ahead,fruther perfecting all kinds of equipment to develop the high quality brand for the company.The company sincerely hopes that we can get the friendly cooperation with all circles of the community.