CK45 seamless honed tubing
USD $1,200 - $2,000 /Ton
Min.Order:1 Ton
Changzhou Chengxin Metal Products Co., Ltd.
Commodity: CK45 seamless honed tubing
Standard specification&material: DIN 2391-2 ST52,ASTM A519 AISI1020,AISI1026,AISI1045,AISI4130,SAE4140,AISI4145,EN10305-1 E355,C45E,CK45,25CrMo4,42CrMo4,etc.
Size range:73mm*63mm - 325mm*300mm
Manufacture method: cold rolled, hydraulic cold drawn
Delivery condition:
BK | BKW | BKS | GBK | NBK |
+C | +LC | +SR | +A | +N |
Internal surface treatment method: honing or skiving and roller burnishing
OD tolerance: as per DIN 2391-1
ID tolerance: H7,H8,H9,H10 or given by customer.
W.T tolerance(eccentricity): +/-5%
Bore roughness(Ra): 0.25um max.
Chemical composition requirement of ST52 material:
Element | C | Si | Mn | P | S |
Content (%) | 0.21% max | 0.55% max | 1.60% max | 0.025% max | 0.025% max |
Mechanical properties of E355 tubes:
BK | BKW | BKS | GBK | NBK | |
Tensile strength: | 640 Mpa min | 580 Mpa min | 580 Mpa min | 490 Mpa min | 490Mpa-630Mpa |
Yield strength | - | - | 420 Mpa min | - | 355 Mpa min |
Elongation | 4% min | 7% min | 10% min | 22% min | 22% min |
Packing: tubes will be packed in bundles tied with steel strips. Slightly internal and external oil coating for anti-rust protection. End plastic caps. External packing by knit bags.
Marking on each piece of tube: to be confirmed.
Mechanical stamp on each piece of tube is available.
External machining or external polishing service can be provided.
Other tests&inspections like hardness test,metallic phase test,grain size test,ultrasonic test can be negotiated.
Payment: 30% deposit,balance before shipment or against copy of B/L or L/C at sight.
MOQ: 4 tons for each size.
Warranty: 1 years after receipt of tubes.