GB / T9948seamless steel yeeb nkab rau roj av tawg yog ib qho seamless yeeb nkab haum rau cov kav dej kub, cov khoom siv hluav taws xob thiab cov kav dej hauv cov roj av refineries. High-quality carbon structural steel, alloy structural steel thiab stainless kub-resistant steel high-pressure seamless rigid kav yog siv los tsim chav boiler kav dej siab thiab saum toj no. Cov kav dej boiler no ua haujlwm nyob rau hauv qhov kub thiab txias, thiab cov kav dej tau raug cov pa taws kub. Oxidation thiab corrosion kuj yuav tshwm sim nyob rau hauv qhov kev txiav txim ntawm roj thiab dej vapor. Yog li ntawd, cov kav hlau steel yuav tsum muaj lub zog ntev, siab oxidation tsis kam, thiab kev ruaj ntseg zoo. Ntxiv nrog rau kev ua kom muaj cov tshuaj lom neeg muaj pes tsawg leeg thiab cov khoom siv kho tshuab, cov kav dej kub siab boiler yuav tsum tau nqa tawm hydraulic siab ntsuas ib los ntawm ib qho, suav nrog kev nthuav dav thiab kev sib tw. High-pressure seamless kav xa mus rau hauv lub tshav kub-kho lub xeev.
Petroleum cracking yeeb nkab ntau lawm thiab tsim txoj kev:

① Feem ntau, qhov kev pabcuam kub ntawm seamless steel kav yog qis dua 450 ° C. Cov kav dej hauv tsev yog tsim los ntawm No. 10, No. 20,12 CrMo, 15 CrMo, 12CrlMo, 12CrlMoV, 12Cr5MoI, 12Cr9MoI, cov kav dej kub dov lossis cov kav dej txias.

② GB9948 tus qauv seamless steel kav feem ntau raug rau qhov kub thiab txias thaum siv. Cov kav dej yuav oxidize thiab corrode nyob rau hauv qhov kev txiav txim siab kub flue roj thiab dej vapor. Cov kav hlau steel yuav tsum muaj lub zog ntev ntev, ua haujlwm siab rau oxidation thiab corrosion, thiab zoo structural stability.

siv:

① Feem ntau, seamless steel kav feem ntau yog siv los ua cov kav dej hauv cov kav dej, cov kav dej kub npau npau, cov kav dej superheated, cov kav dej superheated rau locomotive boilers, cov kav dej loj thiab me me thiab cov kav dej cib, thiab lwm yam.

②GB9948 seamless steel yeeb nkab feem ntau yog siv los tsim cov raj superheater, reheater raj, cua qhia cov raj, cov kav dej loj, thiab lwm yam.

GB9948 tus qauv seamless steel kav tau muab faib ua cov kav dej dav dav thiab cov kav dej siab siab boiler raws li lawv qhov kev ua haujlwm kub. Txawm hais tias cov raj boiler dav dav lossis cov raj kub siab boiler, lawv tuaj yeem muab faib ua ntau yam steel kav raws li lawv qhov kev siv sib txawv.
GB / T9948 seamless steel yeeb nkab, sab nraud txoj kab uas hla 10 ~ 426mm, phab ntsa thickness 1.5 ~ 26mm. Sab nraud txoj kab uas hla thiab phab ntsa thickness ntawm superheated chav tubes, cov pa luam yeeb loj, cov pa luam yeeb me me thiab arch bricks siv nyob rau hauv locomotive boilers yog txwv tsis pub.

Cov tsos mob zoo: Tsis muaj kab nrib pleb, folds, rolls, scabs, delamination thiab cov kab plaub hau raug tso cai rau sab hauv thiab sab nrauv ntawm cov kav hlau. Cov teeb meem no yuav tsum tau muab tshem tawm tag nrho. Qhov tob tu yuav tsum tsis txhob ntau tshaj qhov tsis zoo sib txawv ntawm nominal phab ntsa thickness, thiab qhov tseeb phab ntsa thickness ntawm qhov chaw ntxuav yuav tsum tsis txhob tsawg tshaj li qhov tsawg kawg nkaus tso cai phab ntsa thickness.