Kab yeeb nkab specification: 8-1240 × 1-200mm

Txuj: API SPEC 5L

Siv: siv rau roj, dej thiab roj tsheb thauj mus los hauv kev lag luam roj av thiab natural gas.

API SPEC 5L-2007 (kab yeeb nkab specification), muab tso ua ke thiab tawm los ntawm American Petroleum Institute, feem ntau siv thoob plaws ntiaj teb.Kab yeeb nkab: Cov roj, roj lossis dej uas tawm hauv av yog thauj mus rau cov chaw lag luam roj av thiab cov khoom siv hluav taws xob los ntawm cov kab yeeb nkab.Cov kav dej muaj xws li cov kav dej seamless thiab welded kav.Cov yeeb nkab kawg muaj qhov xaus, threaded xaus thiab lub qhov (socket) xaus;txoj kev sib txuas yog qhov kawg vuam, coupling kev sib txuas, qhov (socket) txuas, thiab lwm yam. Cov khoom tseem ceeb ntawm lub raj yog B, X42, X46, X56, X65, X70 thiab lwm yam steel qib..

Kab yeeb nkab txheem:

API SPEC 5L-American Petroleum Institute Standard

GB / T9711-Tuam Tshoj National Standard

Siv:

Oxygen, dej thiab roj conveying kav siv nyob rau hauv roj av thiab natural gas industries

Feem ntau tsim steel yeeb nkab qib:

B, X42, X52, X60, X65, X70 L245 L290 L320 L360 L390 L450 L485

Kab yeeb nkab loj kam rau ua:

1. 【Sib cais hluav taws rau kab kav】 Kub kub tempering (150-250 degrees)

Cov qauv tau txais los ntawm qhov kub thiab txias yog tempered martensite.Nws lub hom phiaj yog los txo cov kev ntxhov siab sab hauv thiab brittleness ntawm quenched steel nyob rau hauv lub premise ntawm kev tswj siab hardness thiab siab hnav tsis kam, thiaj li tsis txhob tawg los yog ntxov ntxov puas thaum siv.Nws yog tsuas yog siv rau ntau yam high-carbon txiav cov cuab yeej, ntsuas cov cuab yeej, GB / T9711.1 pipeline steel kav, dov bearings thiab carburized qhov chaw, thiab lwm yam. Lub hardness tom qab tempering yog feem ntau HRC58-64.

2. 【Sib cais hluav taws rau cov kav dej】 nruab nrab kub tempering (250-500 degrees)

Cov qauv tau los ntawm tempering ntawm nruab nrab kub yog tempered troostite.Lub hom phiaj yog kom tau txais lub zog tawm los siab, elastic txwv thiab siab toughness.Yog li ntawd, nws yog tsuas yog siv rau kev kho mob ntawm ntau yam GB / T9711.1 pipeline steel kav thiab kub ua hauj lwm pwm, thiab lub hardness tom qab tempering feem ntau yog HRC35-50.

3. 【Sib cais hluav taws rau kab kav】 Kub kub tempering (500-650 degrees)

Cov qauv tau txais los ntawm kev kub siab tempering yog tempered sorbite.Kev lig kev cai, kev kho cua sov ua ke nrog quenching thiab kub tempering yog hu ua quenching thiab tempering kev kho mob, thiab nws lub hom phiaj yog kom tau txais cov neeg kho tshuab zoo nrog lub zog zoo, hardness, plasticity thiab toughness.Yog li ntawd, nws yog dav siv nyob rau hauv tsheb, GB / T9711.1 pipeline steel kav, tshuab cuab yeej thiab lwm yam tseem ceeb yam ntxwv qhov chaw, xws li txuas rods, bolts, zog thiab shafts.Lub hardness tom qab tempering feem ntau yog HB200-330.