**ASTM A234 WPC** is a standard specification for carbon steel and alloy steel pipe fittings
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Alloy 28 (UNS N08028) is a nickel-iron-chromium alloy with additions of copper and molybdenum, designed
**P690QL1** is a high-strength, quenched, and tempered fine-grained steel that is commonly used in the
**EN ISO 9606-1** is a European standard that specifies the requirements for the qualification testing
**ISO 15614-1:2017** is an international standard that specifies the requirements for the qualification of welding
**ASTM A182 F310H** is a specification for forged or rolled alloy and stainless steel pipe
