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API Spec 5LD	CRA clad or lined steel pipe
ANSI / API Spec 6A	Specification for wellhead and christmas tree equipment
ISO 15614-7	Specification and qualification of welding procedures for metallic materials-Welding procedure test—Part 7: Overlay welding
SY/T 6623	Specification for CRA clad or lined steel pipe
NB/T 47014	Welding procedure qualification for pressure equipment
ISO 3834-2	Quality requirements for welding-fusion welding of metallic materials —Part 2: Comprehensive quality requirements
NACE MRO175 / ISO 15156	Petroleum and natural gas industries-Materials for use in H2S-containing environments in oil and gas production
API PR 582	Welding guidelines for the chemical, oil, and gas industries
DNV-OS-F101	Submarine pipeline systems
API 17D	Specification for subsea wellhead and tree equipment
API 6D	Specification for valves
SY/T 7464	Internal lined or clad corrosion resistant alloy pipeline welding and inspection specification

BASE MATERIALS	MATERIAL STANDARD
PIPE	API L X Series, API 5L Gr. B Series, ASTM A53 B Series, ASTM A106 Series, ASTM A333 GR 6 Series, ASTM A312 Series, ASTM 671 Series, ASTM 691 Series
FLANGE	ASTM A105 Series, ASTM A350 Series, ASTM A694 Series, ASTM A182 Series, API K Series, ASTM A29 4140 Series, etc.
FITTING	ASTM A234 Series, ASTM A420 Series, ASTM A860 Series, ASTM A516 Series, etc.

WELDING MATERIALS	WELDING MATERIALS GRADE
STAINLESS STEEL	304, 316L, 321, 347, 310S, 904L, 309L, 317L, S31254, etc.
NICKEL ALLOY	625, 825, C22, C276, 400, K500, etc.
BRONZE & COPPER ALLOY	ALUMINIUM BRONZE, TIN BRONZE, SILICON BRONZE, NICKEL-ALUMINUM BRONZE, B10(C70600), B30(C70500), etc.
DUPLEX	S31803、S32750、S32760, etc.
FERRO ALLOY	TP405、TP409、TP410, etc.
TITANIUM	TA1、TA2、TA3, etc.
COBALT BASE ALLOY	Stellite 6、12、21, etc.
BABBITT ALLOY	ZChSnShll-6、ZChSnSh11-4、ZChPhSh16-16-2、ZChPhSh-116-1, etc.

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