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Grade:ST52,ST52.3,CK45,E355,16Mn,STKM13C,SAE1020,SAE1026,SAE1045
Delivery condition: BK + S
length: 5.8 meter normally, can be cut according to request
Surface roughness: 0.2 - 0.4µm
Tolerate:H8
Outside Diameter +1% / -1%
Wall Thickness +12.5% / -10%
Chemical composition as below
| Standard codes | Models of steel tubes | Chemical compositions | ||||||||
| C | Si | Mn | P | S | Cu | Ni | Mo | Cr | ||
| GB/T8162 | 10 | 0.070.14 | 0.170.37 | 0.350.65 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | / | ≤0.15 |
| st45 | 0.170.24 | 0.170.37 | 0.350.65 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | / | ≤0.25 | |
| 35 | 0.320.40 | 0.170.37 | 0.500.80 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | / | ≤0.25 | |
| 45 | 0.420.50 | 0.170.37 | 0.500.80 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | / | ≤0.25 | |
| st52 | 0.120.20 | 0.200.55 | 1.201.60 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | / | ≤0.25 | |
| 15CrMo | 0.120.18 | 0.170.37 | 0.400.70 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.30 | 0.400.55 | 0.801.10 | |
| 12Cr1MoV | 0.080.15 | 0.170.37 | 0.400.70 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.30 | 0.250.35 | 0.901.20 | |
| ASTMA53 | A | ≤0.25 | / | ≤0.95 | ≤0.05 | ≤0.06 | ≤0.40 | ≤0.40 | ≤0.15 | ≤0.40 |
| ASMESA53 | B | ≤0.30 | / | ≤1.20 | ≤0.05 | ≤0.06 | ≤0.40 | ≤0.40 | ≤0.15 | ≤0.40 |
packing:in bundles/ varnish paint outside/ with plastic caps on both ends
(.can chrome plated according to customer's request)
