1. material: S355J2G3, st52.3, A105, F316, AISI316,LF2,42CrMo4, C45,1045,8620,4340,etc 2. dimension: OD50~5000 mm, THK 50~1500 mm.
3. Material standard: GB, ASTM, ASME, AISI, API, DIN, UNI, BS
4. Delivery condition: Rough machining
5. 3.1 certificate
6. CIF or FOB
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