ʻO ASTM A53 Standard ka mea maʻamau maʻamau no ka paipu kalapona kalapona, ʻaʻohe mea no nā paipu kalapona ʻole a me nā paipu a i ʻole nā ​​paipu wteel welded, nā paipu ʻole a me nā paipu zinc coated.

ʻEleʻele a me ka Hot-Dipped Galvanized nominal (average) paipu paia no ka wili, kulou, flanging a me nā kumu kūikawā ʻē aʻe a kūpono no ka wili.ʻAʻole i manaʻo ʻia ka paipu hoʻomau-welded no ka flanging.ʻO kēlā me kēia lōʻihi o ka paipu e kau ʻia i ka hoʻāʻo hydrostatic.Eia kekahi, e nānā ʻia kēlā me kēia paipu e kahi ʻano hoʻokolohua non-destructive e like me nā hana i koi ʻia. Ua loaʻa i kā mākou hui ka ʻike waiwai e pili ana i nā paipu seamless carbon i nā makahiki he nui a ua nānā mākou i kēlā me kēia papahana.

NA ANO PIPE ASTM A53

Ua uhi ʻia nā ʻano a me nā māka o ka paipu A53 i loko o kēia mau kikoʻī:

• ʻAno F – Uhi-butt-welded, hoʻomau ʻia ʻo Grade A
• ʻAno E- Uila-kuʻe-weled, Papa A me B
• ʻAno S- Holoʻole, Papa A a me B

Inā he nīnau kāu, e ʻoluʻolu e kelepona mai iā mākou.