Ụkpụrụ ndị a na-akpọ"

Enwere ọtụtụ ụkpụrụ maka ngwaahịa igwe na United States, ọkachasị gụnyere ndị a:

ANSI American mba ọkọlọtọ

AISI American Institute of Iron na Steel ụkpụrụ

ASTM Standard nke American Society for Materials and Testing

ASME Standard

Nkọwapụta ihe AMS Aerospace (otu n'ime nkọwapụta ihe ndị a na-ejikarị na ụlọ ọrụ ikuku US, nke SAE mepụtara)

API American Petroleum Institute ọkọlọtọ

Ụkpụrụ AWS AWS

SAE SAE Society of Motor Engineers ọkọlọtọ

Ọkọlọtọ ndị agha MIL Anyị

QQ anyị ọkọlọtọ gọọmentị etiti

Ndebiri ahaziri maka obodo ndị ọzọ

ISO: International Organisation for Standardization

BSI: British Standards Institute

DIN: German Standard Association

AFNOR: Ndị otu French maka Standardization

JIS: Nnyocha ụkpụrụ ụkpụrụ ụlọ ọrụ Japanese

EN: ọkọlọtọ European

GB: Ọkọlọtọ mba amanyere iwu nke ndị mmadụ Republic of China

GB/T: Ọkọlọtọ mba akwadoro nke Republic of China

GB/Z: National Standardization Guide technical documents of the People's Republic of China

Ndebiri nke a na-ejikarị

SMLS: igwe anaghị agba nchara

ERW: Igwe ọkụ na-eguzogide ịgbado ọkụ

EFW: Igwe ọkụ eletrik welded

SAW: Mgbado ọkụ n'okpuru mmiri

SAWL: Longitudinal arc welding Longitude

SAWH: ịgbado ọkụ n'okpuru mmiri

SS: igwe anaghị agba nchara

Njikọ njedebe na-ejikarị

Joseph t.: njedebe dị larịị

BE: Mkpọda njedebe gbawara agbawa

Eriri ngwụcha eri

BW: Ngwunye welded butt

Cap Cap

NPT: eriri ọkpọkọ mba