Cov yeeb nkab steel uas nws sab nraud rau phab ntsa thickness piv tsawg dua 20 yog hu ua tuab-wall steel yeeb nkab.

Feem ntau yog siv los ua roj av geological drilling kav, tawg kav rau kev lag luam petrochemical, boiler kav, bearing kav thiab high-precision structural kav rau tsheb, tsheb laij teb, thiab aviation.

Manufacturing txheej txheem ntawm seamless steel yeeb nkab

1. Kub dov (extruded seamless steel yeeb nkab): round tube billet → cua sov → tho → peb-yob ntoo khaub lig dov, nruam dov los yog extrusion → yeeb nkab tshem tawm → sizing (los yog txo) → txias → Straightening → hydraulic kuaj (los yog flaw detection) → npav → warehouse.

Cov khoom siv raw rau dov seamless kav yog round yeeb nkab billet, round yeeb nkab billets yog txiav los ntawm lub tshuab txiav mus rau hauv ib tug billet nrog ib tug ntev ntawm txog 1 meter thiab xa mus rau lub cub tawg rau cua sov ntawm ib tug conveyor siv. Lub billet yog pub rau hauv lub qhov cub thiab rhuab ntawm qhov kub ntawm kwv yees li 1200 degrees Celsius. Cov roj yog hydrogen lossis acetylene. Kev tswj qhov kub thiab txias hauv qhov cub yog qhov teeb meem tseem ceeb. Tom qab lub raj puag ncig tawm ntawm lub qhov cub, nws yuav tsum tau tho los ntawm lub tshuab xuas nrig ntaus. Feem ntau, lub tshuab tho ntau dua yog lub tshuab tapered roller tho. Hom tho tshuab no muaj kev ua haujlwm siab ntau lawm, cov khoom lag luam zoo, loj perforation txoj kab uas hla nthuav dav, thiab tuaj yeem hnav ntau hom hlau. Tom qab piercing, lub round tube billet yog successively hla-dov, tsis tu ncua dov los yog extruded los ntawm peb yob. Tom qab nyem, tshem lub raj thiab calibrate. Lub tshuab sizing rotates ntawm ib tug ceev ceev los ntawm ib tug conical laum me ntsis rau laum qhov rau hauv cov hlau dawb paug los tsim ib tug steel yeeb nkab. Sab hauv txoj kab uas hla ntawm cov yeeb nkab steel yog txiav txim siab los ntawm qhov ntev ntawm lub taub sab nraud ntawm lub laum me ntsis ntawm lub tshuab sizing. Tom qab cov yeeb nkab steel yog qhov loj, nws nkag mus rau hauv cov cua txias ntauwd thiab txias los ntawm txau dej. Tom qab cov yeeb nkab steel yog txias, nws yuav ncaj. Tom qab straightening, cov yeeb nkab steel raug xa mus rau cov hlau tsis haum (lossis kuaj hydraulic) los ntawm txoj siv conveyor rau kev kuaj pom qhov tsis zoo. Yog tias muaj cov kab nrib pleb, npuas, thiab lwm yam hauv cov yeeb nkab steel, nws yuav raug kuaj pom. Tom qab kev soj ntsuam zoo ntawm cov kav dej steel, yuav tsum tau xaiv phau ntawv nruj. Tom qab kev soj ntsuam zoo ntawm cov yeeb nkab steel, pleev xim rau cov naj npawb, specification, ntau lawm batch tooj, thiab lwm yam nrog cov xim. Nws yog hoisted mus rau hauv lub warehouse los ntawm ib tug crane.

2.Cold drawn (dov) seamless steel yeeb nkab: round tube billet → cua sov → tho → heading → annealing → pickling → oiling (tooj liab plating) → multi-pass txias drawing (txias dov) → billet raj → tshav kub kho → straightening → dej Compression test (kev kuaj pom qhov tsis haum) → kos npe → warehousing.

Seamless yeeb nkab ntau lawm classification-kub dov yeeb nkab, txias dov yeeb nkab, txias drawn yeeb nkab, extruded yeeb nkab, yeeb nkab jacking

1. Seamless steel yeeb nkab rau cov qauv (GB/T8162-1999) yog seamless steel yeeb nkab rau cov qauv dav dav thiab cov qauv siv tshuab.

2. Seamless steel kav dej rau kev thauj mus los (GB/T8163-1999) yog cov kav dej seamless steel siv los thauj dej, roj, roj thiab lwm yam dej.

3. Seamless steel kav boilers rau qis thiab nruab nrab siab boilers (GB3087-1999) yog siv los tsim superheated chav kav, boiling dej kav rau tsawg thiab nruab nrab siab boilers ntawm ntau yam lug thiab superheated chav kav rau locomotive boilers, loj hluav taws xob kav, me me hluav taws kub. Cov kav dej thiab cov pob zeb cib High-quality carbon structural steel kub-dov thiab txias-draw (dov) seamless steel hlab rau cov kav dej.

4. Seamless steel kav rau high-pressure boilers (GB5310-1995) yog high-quality carbon steel, alloy steel thiab stainless kub-resistant steel seamless steel kav rau cov cua kub saum npoo ntawm dej- raj boilers nrog siab siab thiab saum toj no.

5. High-pressure seamless steel kav rau cov khoom siv chiv (GB6479-2000) yog cov khoom siv zoo carbon steel thiab alloy steel seamless steel kav tsim rau cov khoom siv tshuaj thiab cov kav dej nrog kev ua haujlwm kub ntawm -40 ~ 400 ℃ thiab ua haujlwm siab ntawm 10 ~ 30 Mav.

6. Seamless steel kav rau roj av tawg (GB9948-88) yog seamless steel kav uas haum rau cov tub rauv, cua kub exchangers thiab pipelines nyob rau hauv roj refineries.

7. Cov kav hlau hlau rau geological drilling (YB235-70) yog cov kav hlau siv rau cov tub ntxhais drilling los ntawm cov chaw haujlwm geological. Lawv tuaj yeem muab faib ua cov kav dej laum, laum dab tshos, cov kav dej tseem ceeb, cov kav dej thiab cov kav dej xau raws li lawv lub hom phiaj.

8. Seamless steel kav rau pob zeb diamond core drilling (GB3423-82) yog seamless steel kav rau laum kav, core rods, thiab casings siv rau pob zeb diamond core drilling.

9. Petroleum drilling yeeb nkab (YB528-65) yog seamless steel yeeb nkab siv rau thickening sab hauv lossis sab nraud ntawm ob qhov kawg ntawm cov roj drilling. Cov kav hlau tau muab faib ua ob hom: hlau thiab tsis muaj hlau. Cov kav hlau txuas txuas nrog cov pob qij txha, thiab cov kav hlau tsis muaj hlua txuas nrog cov cuab yeej sib txuas los ntawm pob tw vuam.

10. Carbon steel seamless steel kav rau nkoj (GB5213-85) yog carbon steel seamless steel kav siv nyob rau hauv kev tsim cov chav kawm I siab piping systems, Class II siab piping systems, boilers thiab superheaters. Kev ua haujlwm kub ntawm cov pa roj carbon steel seamless steel yeeb nkab phab ntsa tsis tshaj 450 ℃, thaum cov hlau alloy steel seamless steel yeeb nkab phab ntsa siab tshaj 450 ℃.

11. Seamless steel raj rau tsheb qag lub tes tsho (GB3088-82) yog cov khoom siv zoo carbon steel thiab alloy structural steel kub dov seamless steel raj rau kev tsim cov tsheb qag tes tsho thiab tsav qag qag raj.

12. High-pressure roj kav rau diesel xyaw (GB3093-86) yog txias-draw seamless steel kav siv los tsim cov kav dej siab rau diesel cav txhaj tshuab.

13. Precision puab txoj kab uas hla seamless steel kav rau hydraulic thiab pneumatic thooj voos kheej kheej (GB8713-88) yog txias-draw los yog txias-dov precision seamless steel kav nrog meej puab diameters rau kev tsim cov hydraulic thiab pneumatic thooj voos kheej kheej.

14. Cold-draw los yog txias-dov precision seamless steel yeeb nkab (GB3639-83) yog ib tug txias-draw los yog txias-dov precision seamless steel yeeb nkab nrog siab qhov tseeb thiab zoo nto tiav rau txhua yam qauv thiab hydraulic khoom. Kev siv cov yeeb nkab steel seamless los tsim cov cuab yeej siv tshuab lossis cov khoom siv hydraulic tuaj yeem txuag tau cov neeg ua haujlwm ntau teev, nce kev siv cov khoom siv, thiab tib lub sijhawm pab txhim kho cov khoom zoo.

15. Stainless hlau seamless steel yeeb nkab (GB/T14975-1994) yog ib tug kub-kuav los tiag stainless hlau ua los ntawm corrosion-resistant kav thiab structural yam thiab cov khoom siv lug siv nyob rau hauv tshuaj, roj av, textile, kev kho mob, khoom noj khoom haus, machinery thiab lwm yam industries. (Extruded, nthuav) thiab txias kos (dov) seamless steel hlab.

16. Stainless hlau seamless steel kav rau cov dej thauj mus los (GB/T14976-1994) yog kub dov (extruded, nthuav) thiab txias-draw (dov) seamless steel kav ua los ntawm stainless hlau rau kev thauj mus los kua.

17. Cov yeeb nkab tshwj xeeb zoo li seamless steel yeeb nkab yog cov ntsiab lus dav dav rau seamless steel kav nrog cov duab sib dhos uas tsis yog cov kav dej puag ncig. Raws li cov duab sib txawv thiab qhov loj ntawm cov yeeb nkab steel, nws tuaj yeem muab faib ua vaj huam sib luag-walled tshwj xeeb-zoo li tus seamless steel yeeb nkab (code D), tsis sib xws-walled tshwj xeeb-zoo li tus seamless steel yeeb nkab (code BD), thiab sib txawv txoj kab uas hla tshwj xeeb. -shaped seamless steel yeeb nkab (code BJ). Tshwj xeeb-zoo li tus seamless steel kav yog dav siv nyob rau hauv ntau yam structural qhov chaw, cov cuab yeej thiab mechanical qhov chaw. Piv nrog rau cov kav dej puag ncig, cov kav dej tshwj xeeb feem ntau muaj lub sijhawm loj ntawm inertia thiab seem modulus, thiab muaj ntau dua dabtsi yog khoov thiab torsion tsis kam, uas tuaj yeem txo qhov hnyav ntawm cov qauv thiab txuag hlau.

Feem ntau, seamless steel kav yog ua los ntawm 10, 20, 30, 35, 45 thiab lwm yam zoo carbon steels xws li 16Mn, 5MnV thiab lwm yam low-alloy structural steels los yog 40Cr, 30CrMnSi, 45Mn2, 40MnB thiab lwm yam steels. dov los yog txias dov. Seamless kav uas ua los ntawm cov pa roj carbon tsawg xws li 10 thiab 20 feem ntau yog siv rau cov kav dej thauj mus los. Seamless raj ua los ntawm nruab nrab carbon steel xws li 45 thiab 40Cr yog siv los tsim cov khoom siv kho tshuab, xws li cov kev ntxhov siab ntawm cov tsheb thiab tsheb laij teb.　Feem ntau, seamless steel kav yuav tsum tau siv rau lub zog thiab flattening xeem. Kub-dov steel kav yog xa mus rau hauv lub xeev kub dov los yog kub-kho lub xeev; txias-kuav los tiag steel kav yog xa hauv lub xeev kub-rhuab. Seamless steel raj rau qis thiab nruab nrab siab boilers: siv los tsim ntau yam tsawg thiab nruab nrab siab boilers, superheated chav tubes, boiling dej raj, dej phab ntsa thiab superheated chav tubes rau locomotive boilers, loj pa luam yeeb raj, me me pa luam yeeb raj thiab arched cib hlab. .

　　Siv cov khoom siv zoo carbon steel kub dov lossis txias dov (dial) seamless steel yeeb nkab. Nws yog tsim los ntawm No. 10 thiab No. 20 steel. Ntxiv nrog rau kev ua kom ntseeg tau cov tshuaj lom neeg muaj pes tsawg leeg thiab cov khoom siv kho tshuab, kev sim hydraulic, xws li crimping, flaring, thiab flattening, yuav tsum tau ua. Cov khoom kub-kuav los tiag yog xa mus rau hauv lub xeev kub-kuav los tiag, thiab cov khoom txias-dov yog xa mus rau hauv lub xeev kub-kho.

18.GB18248-2000 (Seamless steel yeeb nkab rau lub tog raj kheej roj) feem ntau yog siv los ua ntau yam roj thiab hydraulic kheej kheej. Nws cov ntaub ntawv sawv cev yog 37Mn, 34Mn2V, 35CrMo, thiab lwm yam.

Txheeb xyuas cov kav hlau tsis zoo thiab tsis zoo ntawm cov phab ntsa tuab

1. Fake tuab-walled steel kav yog yooj yim rau quav.

2. Fake tuab-walled steel kav feem ntau muaj pitting ntawm qhov chaw.

3. Fake tuab-walled steel kav yuav ua rau muaj caws pliav.

4. Qhov saum npoo ntawm cov khoom cuav thiab cov khoom tsis zoo yog yooj yim tawg.

5. Fake tuab-walled steel kav yog ib qho yooj yim mus khawb.

6. Cov yeeb nkab tuab-walled steel yeeb nkab tsis muaj hlau nplaum thiab muaj lub teeb liab lossis zoo ib yam li npua hlau.

7. Tus ntoo khaub lig tav ntawm cov yeeb nkab tuab-walled steel yog nyias thiab qis, thiab feem ntau tshwm sim tsis txaus siab.

8. Qhov hla ntawm cov yeeb nkab tuab tuab-walled steel yeeb nkab yog oval.

10. Cov khoom ntawm fake tuab-walled steel yeeb nkab muaj ntau impurities thiab qhov ntom ntawm cov hlau yog me heev.

11. Lub puab txoj kab uas hla ntawm fake tuab-walled steel yeeb nkab fluctuates zoo heev.

12. Cov cim lag luam thiab luam ntawv ntawm cov raj zoo yog cov qauv zoo.

13. Rau peb cov xov loj nrog lub cheeb ntawm ntau tshaj 16 steel kav, qhov kev ncua deb ntawm ob lub cim yog ntau tshaj IM.

14. Lub longitudinal tuav ntawm shoddy steel rebar feem ntau wavy.

15. Fake tuab-wall steel yeeb nkab manufacturers tsis tsav, yog li lub ntim yog xoob. Sab yog oval.