Paipu kila kalapona

He mea paʻa ka paipu kila kalapona i hana ʻia mai ke kila kalapona.
Paipu kila CHS maʻamau: ASTM A53, API 5L, ASTM A252, ASTM A795, ISO65, DIN2440, BS1387. BS1139, EN10255, EN39, JIS3444, GB/T 3091 & GB/T13793
Paipu kila RHS SHS maʻamau: ASTM A500, EN10219, EN10210, JIS3466, GB/T 6728
Noi: Paipu kila no ke kūkulu ʻana / kūkulu hale, ʻAno kila, Paipu kila no ka pā,
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