$900-1500 /Metric Ton
| Payment Type: | L/C,T/T,D/P,D/A |
| Incoterm: | FOB,CIF,CFR,EXW,FAS,CPT,FCA,CIP,DDP |
| Min. Order: | 1 Metric Ton |
| Transportation: | Ocean,Land,Air |
| Port: | Shanghai Port,Zhangjiagang Port,Nanjing Port |
Model No.: CX-ST
Brand: CHENGXIN
Standard: Bs, Gb, Jis, Din
Material: Stba20-Stba26, St35-St52, Cr-Mo Alloy, Q195-Q345, 10#-45#, 16mn, Stb35-Stb42
Section Shape: Round, Rectangular, Square
Place Of Origin: China
Application: Fluid Pipe, Drill Pipe, Structure Pipe
Production Process: Cold Drawn
Whether Alloy: Non-Alloy
Tolerance: ±5%
Category: Seamless Steel Pipe
Type: seamless
Surface Treatment: Heat treating
Raw Material: seamless circular pipe
| Selling Units | : | Metric Ton |
| Package Type | : | Seaworthy export packing |
| Picture Example | : |
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Square tube, also named square hollow section, is made from circular seamless pipe through cold drawing.
We can manufacture Seamless Square Tube or seamless square hollow section with carbon steel and alloy steel.
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.
Cold drawn seamless rectangular steel tube, also named rectangular hollow section, is a kind of shapped tube.
Seamless rectangular tube is made from circular seamless pipe.
We can manufacture both carbon steel and alloy steel rectangular tube.
Keyword: Seamless rectangular tube, rectangular steel tube, rectangular tube, cold drawn rectangular tube, cold drawn seamless rectangular tube
1. Commodity: cold drawn seamless rectangular steel tubes
2. Size range: 80*60-300*200
3. Standard specification & steel grade:
| ASTM A519: | 1010,1020,1026,1045,1518,1524,4130,4140,4145 |
| EN 10305-1: | E235,E355,C45E,25CrMo4,42CrMo4, S355JR,S355J2,S355J2G3 |
| DIN 2391-2: | ST45,ST52,ST52.3, ST52.4 |
| JIS 3445: | STKM 11 A/B/C, STKM 12 A/B/C, STKM 13 A/B/C |
| GB/T 3639: | 10#,20#,45#,25Mn, 30CrMo,42CrMo |
5. Delivery Condition:
| +LC | +SR | +A | +N |
| BKW | BKS | GBK | NBK |
| Cold drawn | Stress relieved | Annealed | Normalized |
7. Twist: 2.0mm/1000mm max
8. Radius: 2 x thickness, 2.5 x thickness, 3 x thickness depending on thickness
9. Straightness: 1.2mm/1000mm max
10. Marking on each piece of tube: as per request
11. Packing: in bundles tied with steel strips. Internal and external oil coating. External packing by PVC bags and knit bags.
Cold drawing bench:
Straightening machine:
Eddy current + Ultrasonic Non-destructive detection system:
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