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Size£ºOuter diameter£º14mm---426mm Wall thickness£º1.5---40mm |
¡ñShip regulations£º 1¡¢CCS Rules for Classification and Construction of Ships 2¡¢BV Rules for Classification of Ships 3¡¢LR Rules and Regulations for Classification of Ships 4¡¢DNV Rules for Classification of Ships 5¡¢GL Rules for Classification and Construction ¡ñStandard: GB/T5312 ¡ñApplication: For the line pipe manufacturing of marine boliers,superheaters and pressure-resistant ¡ñSize deviation Outer diameter | Hot-rolled pipe | Size (mm) | ¡Ü 159 | £¾ 159 | Allowable deviation (%) | ¡À 1.0 | ¡À 1.25 | cold drawn pipe | Size (mm) | ¡Ü 30 | £¾ 30~50 | £¾ 50 | Allowable deviation | ¡À 0.20mm | ¡À 0.30mm | ¡À 0.8% | Wall thickness | Hot- rolled pipe | Size (mm) | 3 £¼ S ¡Ü 20 | S £¾ 20 | Allowable deviation (%) | +15 -10 | ¡À 10 | cold drawn pipe | Size (mm) | 1.5~3 | £¾ 3 | Allowable deviation (%) | +12 -10 | ¡À 10 |
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