Fametahana fantsona & fantsona
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Fametahana fantsona & fantsona
Manana API, ASME, AWS, Aramco voamarina mekanika sy welding injeniera izay mahazatra ny API 5L, ASTM A53/A106/A333, JIS, BS andian-dahatsoratra, API 5CT andian-dahatsoratra, ASME SA-106, SA-192M, SA-210M, Ireo singa mifandraika amin'ny SA-213M, SA-335, GB3087, GB5310 toy ny ASME B16.5, ASME B16.9, ASME B16.11, ASME B16.36, ASME B16.48, ASME B16.47A/B, MSS-SP-44, MSS-SP-95, MESS-SP- 97, andiany DIN, ary ny fenitra eo an-toerana sasany, toy ny DEP, DNV, IPS, CSA-Z245, GB/T 9711 sns. Afaka mirakitra ny ser...