N80 steel yog dab tsi?
N80 steel, cais raws li API (American Petroleum Institute) specifications, yogqib carbon steel feem ntau siv hauv kev lag luam roj thiab roj rau kev tsim cov khoom siv tubular xws li casing thiab tubing.
Dab tsi yog qhov specification ntawm API 5CT N80?
Specification suav nrog1.9 nti (48.3mm), 2 7/8 nti (73.03mm), 2 3/8 nti (60.3mm), 3 1/2 nti (88.9mm), 4 1/2 nti (114.3mm), 4 nti (101.6mm) thiab lwm yam. N80 txhua yam khoom muaj siab dua lwm hom API 5CT. Cov roj av tubing tuaj yeem faib ua hom EUE thiab NUE hom.
Cov tshuaj muaj pes tsawg leeg ntawm N80 yog dab tsi?
Rau qib N80 hom Q cov tshuaj muaj pes tsawg leeg cov ntsiab lus xws li: Chav nyob hauv %, C cov ntsiab lus 0.28-0.32 (OD saum toj no 9 5/8" 244.48 mm, C ntsiab lus yog 0.22-0.29), Si ntsiab lus 0.17-0.37, Mn ntsiab lus 1.30-1.82}4n. 1.3-1.60 Nws. siab tshaj Cr 0.25, siab tshaj Ni 0.20, siab tshaj Cu 0.20, V 0.07-0.12, siab tshaj P 0.025, siab tshaj S 0.020.
Qhov txawv ntawm L80 thiab N80 yog dab tsi?
N80: yield zog ntawm 379MPa ~ 552MPa; tensile Ntau dua lossis sib npaug ntawm 517MPa; Qhov tsawg kawg nkaus elongation ntawm N80 yog 19%. L80: yield zog ntawm 379MPa ~ 552MPa; tensile Ntau dua lossis sib npaug ntawm 655MPa; Qhov tsawg kawg nkaus elongation ntawm L80 yog 15%.