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: ịgbado ọkụ n'ime 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
Oge nzipu: Nov-23-2021