

ASTM A106 garis pipa minyak karbon mulus Tabung baja A283 T91 P91 4130 42CrMo 15CrMo Alloy API bulat 5l A53 pipa baja mulus

API 5CT J55 K55 N80 L80 P110 STC LTC BTC casing oli rig pengeboran mulus pipa baja
Harga terendah 90 hari