$800-2500 /Metric Ton
| Payment Type: | L/C,T/T,D/P,D/A |
| Incoterm: | FOB,CFR,CIF,EXW,FAS,FCA,CPT,CIP,DDP |
| Min. Order: | 1 Metric Ton |
| Transportation: | Ocean,Land,Air |
| Port: | Shanghai Port,Zhangjiagang Port,Nanjing Port |
Model No.: CX-HB
Brand: CHENGXIN
Standard: Bs, Gb, Astm, Jis, Din
Material: St35-St52, Cr-Mo Alloy, Q195-Q345, 10#-45#, 16mn, Stb35-Stb42
Section Shape: Round
Place Of Origin: China
Application: Drill Pipe, Hydraulic Pipe, Gas Pipe, Structure Pipe
Production Process: Hot Rolled
Whether Alloy: Is Alloy
Tolerance: ±5%
Category: Seamless Steel Pipe
OD Treatment: OD machining
ID Treatment: Honing, Deep hole boring
| Selling Units | : | Metric Ton |
| Package Type | : | Seaworthy export packing |
| Picture Example | : |
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Hollow Bar, or steel hollow bar, is a kind of seamless Steel Pipe with heavy wall.
It can be classified as carbon steel hollow bar and alloy steel hollow bar.
Since 1998, Changzhou Chengxin Metal Products Co.,Ltd is focusing on manufacturing of steel pipes&tubes. Started as an ERW steel tube manufacturer, we have built our brands of small and medium size ERW steel tubes in Jiangsu Province. With market and demand change as well as technology improvement,we are devoting ourselves to precision tube manufacturing since 2006.
Two sections are involved here:Cold drawn steel tubes and ERW steel tubes. Till now,we have now been a manufacturers of hydraulic cold drawn steel tubes with capacity of 25000 tons and ERW steel tubes with capacity of 15000 Tons.
Covering an area of about 32000M² with building area of 22000M², we are proud to introduce ourselves as an experienced tube solution provider and reliable partner for various industrial application like hydraulic cylinder,automotive,machinery,etc.
The section of cold drawn steel tubes consists of two advanced hydraulic cold drawing benches(300 tons` power and 250 tons` power),3 heat treating furnaces,4 honing machines and 2 skiving&roller burnishing machines,we are able to manufacture and supply tubes with big size range from 50mm to 325mm in OD and various steel grades covering carbon steel, carbon-Manganese steel, and chrome-molybdenum steel.
The section of ERW steel tubes consists of 2 ERW mills including one high precision ERW steel tube mill.Here,you can find carbon steel and carbon-manganese steel ERW steel tubes with round,square,rectangular,oval shape and bright&smooth or black surface from 8mm to 70mm in OD.Especially,the 3 chain cold drawing benches enables to us to manufacture cold drawn ERW steel tubes for our customers.
Quality assurance system of ISO9001-2008 is strictly applied here and tests&inspections like tensile test,hardness test,impact test,chemical analysis,non-destructive detection are carried out strictly as per standard specification and customers` technical requirement.
We are always here and ready to supply quality tubes,good service,and firm support for customers all over the world.
Hollow bar or steel hollow bar can be considered as a kind of seamless steel pipes with very thick wall. Some hollow bars are made from solid bars, while other hollow bars are made from seamless pipes.
We can manufacture both hollow bars from solid bars through deep hole drilling and hollow bars from seamless pipes through cold drawing.
Product Description: Hollow bar, carbon steel hollow bar, alloy steel hollow bar, cold drawn hollow bar, hot rolled hollow bar
1. Cold drawn carbon steel or alloy steel hollow bar
2. Size range: OD of 80mm-325mm, ID is not restricted
3. Available steel grade:
| AISI/SAE: | 1020,1026,1045,1518,1524,4130,4140,4145,4340 |
| EN: | E235,E355,C45E,25CrMo4,42CrMo4, S355,S355J2,S355J2G3 |
| DIN: | ST45,ST52,ST52.3,ST52.4 |
| JIS: | STKM 11 A/B/C, STKM 12 A/B/C, STKM 13A/B/C |
| GB: | 20#,45#,16Mn,25Mn,27SiMn, Q345B/C/D/E |
5. Delivery Condition:
| +LC | +SR | +A | +N | Q+T |
| BKW | BKS | GBK | NBK | Q+T |
| Cold drawn | Stress relieved | Annealed | Normalized | Quenched+Tempered |
7. Marking on each piece of hollow bar: as pre request.
8. Packing: in bundles tied with steel strips. Internal and external oil coating.
Hollow bar is a kind of seamless pipe with very thick wall or very smaller ID.
Cold drawing bench:
Straightening machine:
Lathes:
Eddy Current + Ultrasonic Non-destructive detection system
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