
Cold Drawn Seamless Precision Steel Tube , DIN 2391 St35 St37, St45, St52 Bright Annealed Tube
Brief Introduction:
Standard: DIN 2391 EN10305-1, EN10305-4, BS 6323, ISO 8535
Grade: St 30 Si / St 30 Al / St 35 / St37 / St37.4 / St45 / St 52 /
St52.4 / E215 / E235 / E355
Out Dimensions: 6 mm ~ 350 mm
Wall Thickness: 0.8 mm ~30mm
Length: Fixed(6m,9m,12,24m) or normal length(5-12m)
Precision steel tube
Precision in size,Bright surface, high mechanical performance
Standard: DIN 2391, EN10305-1, EN10305-4, BS 6323, ISO 8535
STEEL GRADE: ST30Si, ST30Al, ST35, ST37, ST37.4, ST45, ST52, ST52.4, etc
SURFACE TREATMENTS
1. Bare Tube (No coating): Bright and smooth, Surface Roughness both inner and outer surface 0.35Ra Maximum for special requirement
2. Surface Coating
A. Silver galvanized
B. Yellow galvanized
C. Olive green coated
Layer thickness: 8-20um, Salty Spray Test: 48-150 hours
3. Black phosphate
APPLICATIONS
1. Automotive industry
A. Fuel injection lines/nozzles
B. CNG (Compressed Nature Gas) tube-- Burst pressure: 1307Bar, Working Pressure: around 350bar
C. Drive transmission: Steering column elements
D. Gear shafts, hand brake, front axles, airbag inflators, stabilizers, seat fasteners, front-wheel drive shafts
2. Hydraulic Fields
A. Hydraulic circuits (HPL), pneumatic lines, and hydraulic suspension
B. Hydraulic cylinders (HPZ)
Chemical Composition:
Steel grade | Chemical composition, as a percentage by mass | |||||
Symbol | Material number | C max. | Si max. | Mn | P max. | S max. |
St 30 Si | 1.0211 | 0.10 | 0.30 | <=0.55 | 0.025 | 0.025 |
St 30 Al | 1.0212 | 0.10 | 0.05 | <=0.55 | 0.025 | 0.025 |
St 35 | 1.0308 | 0.17 | 0.35 | <=0.40 | 0.025 | 0.025 |
St 45 | 1.0408 | 0.21 | 0.35 | <=0.40 | 0.025 | 0.025 |
St 52 | 1.0580 | 0.22 | 0.55 | <=1.60 | 0.025 | 0.025 |
The following alloying elements may be added: Nb: <=0,03%; Ti: <=0,03%; V: <=0,05%; Nb + Ti + V: <=0,05%. |
Final supply conditions:
Designation | Symbol | Description |
Cold finished (hard) | BK | Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation. |
Cold finished (soft) | BKW | The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding). |
Cold finished and stress-relieved | BKS | Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree. |
Annealed | GBK | The last cold forming process is followed by annealing in a controlled atmosphere. |
Normalized | NBK | The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere. |
Condition on delivery:
Steel Grade | BK | BKW | GBK | NBK | ||||
Code No. | Tensile Strength N/mm2 min | Elongation at rupture N/mm2 min | Tensile Strength N/mm2 min | Elongation at rupture N/mm2 min | Tensile Strength N/mm2 min | Elongation at rupture N/mm2 min | Tensile Strength N/mm2 min | Elongation at rupture N/mm2 min |
St30 Si | 400 | 8 | 330 | 12 | 280 | 30 | 290-420 | 30 |
St30 Al | 400 | 8 | 330 | 12 | 280 | 30 | 290-420 | 30 |
St 35 | 440 | 6 | 370 | 10 | 315 | 25 | 340-470 | 25 |
St 45 | 540 | 5 | 470 | 8 | 390 | 21 | 440-570 | 21 |
St 52 | 590 | 4 | 540 | 7 | 490 | 22 | 490-630 | 22 |
Competitive Advantage:
Yaxin Precision Tube Co., Ltd.
Leading precision steel tube supplier in the global market, yield 70,000 tons per year based on both seamless tubing and welded tubing. 100% of tubing is used on automotive industry and hydraulic system.
Zhangjiagang Bonded Area Henglong Steel Tube Co., Ltd.
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.