Mabele
Mtundu: Wopangidwa ndi chitoliro chopanda chitsulo
Wopangidwa ndi welded steel pipe
Kutsiliza: Wakuda, Wothira Amathithi otentha, Magetsi Amagetsi
Mtundu: American Standard ASTM A733
Muyezo wa chitoliro: ASTM A53
Ulusi: ANSI B1.20.1
DIN Standard DIN2982
Mtengo: DIN2440
Zithunzi za DIN2999
British Standard BS EN10241
Mtengo: BS1387
Mtundu: BS21
Kukula: 1/8″-6″
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