A139 LSAW Structural Pipes

A139 longitudinal welded kav tuaj nyob rau hauv tsib qib: GRA, GRB, GRC, GRD, thiab GRE. Cov kav dej welded no feem ntau yog tsim los siv cov txheej txheem siab ncaj seam vuam txoj kev thiab feem ntau yog siv los thauj cov kua, gases, lossis chav. Raws li lub chaw tsim khoom ntawm A139 hluav taws xob tsis kam welded kav, GNEE Group tuaj yeem muab rau koj nrog A139 high-frequency welded ncaj seam kav, A139 kauv welded kav, thiab A139 carbon steel structural kav. Peb A139 welded kav tau raug xa tawm mus rau ntau dua 8, 000 tuam txhab thoob ntiaj teb. Yog tias koj xav tau A139 welded kav, thov koj xav tiv tauj peb rau kev nug.

A139 Welded Tubes Specification

Loj	4 "mus rau 26"
Teem caij	20, 30, 40, Standard (STD), Extra Heavy (XH), 80, 100, 120, 140, 160, XXH & hnyav dua
Qib	ASTM A139 Qib A, ASTM A139 Qib B, ASTM A139 Qib C, ASTM A139 Qib D, ASTM A139 Qib E
Hom	ERW / Welded / LSAW / SSAW
Ntev	Ib qho Random, Ob Chav Random & Ntev Ntev, Kev Cai Loj - 12 Meter ntev
Xaus	Plain End, Beveled kawg, Treaded
Kev Tiv Thaiv Kawg	Yas Caps
Daim ntawv thov	Roj Refineries, Petrochemicals, Fais Fab Tsim (Nuclear / Thermal), Hlau, Qab Zib, Boiler Equipments, Siab Vessels thiab General Engineering Lub Hom Phiaj
Cov ntsiab lus them nyiaj	L/C, T/T
Cov ntsiab lus ntawm Kev Lag Luam	FOB, CFR, CIF, DDP, EXW

 

 

A139 Welded Steel Yeeb Nkab

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A139 LSAW Pipe Test

• Kev tshuaj xyuas ntawm Geometric Dimensions ntawm A139 Steel Pipes

1. Phab ntsa Thickness Tshuaj xyuas cov kav hlau: Siv lub micrometer thiab ntsuas ultrasonic thickness. Ntsuas tsis pub tsawg tshaj 8 cov ntsiab lus ntawm ob qhov kawg thiab sau cov txiaj ntsig.

2. Txoj kab uas hla sab nraud thiab ovality tshuaj xyuas cov kav hlau: Siv lub calliper, vernier calliper, thiab lub nplhaib ntsuas ntsuas ntsuas qhov siab tshaj plaws thiab qhov tsawg kawg nkaus.

3. Kev soj ntsuam ntev ntawm Cov Yeeb Nkab Hlau: Siv cov kab xev ntsuas steel rau kev ntsuas phau ntawv lossis ntsuas qhov ntev.

4. Kev soj ntsuam ncaj nraim ntawm cov yeeb nkab steel: Siv cov ntug ncaj, 1-meter qib siab, ntsuas qhov ntsuas siab, thiab ib txoj kab zoo los ntsuas qhov deflection ib 'meter' thiab tag nrho ntev.

5. Bevel lub kaum sab xis thiab hauv paus ntsej muag soj ntsuam ntawm cov yeeb nkab steel xaus: Siv lub kaum ntse ntse ntsuas thiab lub ntsuas qhov ntsuas.

• Kev tshuaj xyuas ntawm Sab Hauv thiab Sab Nraud Sab Nraud ntawm Cov Yeeb Nkab Hlau

1. Kev Ntsuam Xyuas Kev Pom Zoo: Ua raws li cov teeb pom kev tshwj xeeb, ua raws li cov qauv thiab kev siv zog, kev txheeb xyuas, thiab tig cov yeeb nkab steel.

2. Kev Ntsuam Xyuas Tsis Zoo (NDT):

a. Kev kuaj ultrasonic (UT):
- Sensitive rau saum npoo thiab sab hauv tawg tsis xws luag nyob rau hauv homogeneous cov ntaub ntawv ntawm ntau yam compositions.

b.Eddy Current Testing (ET) (Electromagnetic Induction):
- Feem ntau rhiab heev rau point-zoo li (pinhole) tsis xws luag.

c. Magnetic Particle Testing (MT) thiab Magnetic Flux Leakage Testing:
- Kev ntsuam xyuas hlau nplaum tsim nyog rau kev kuaj xyuas qhov chaw thiab qhov chaw ze ntawm cov khoom ferromagnetic.

d. Electromagnetic Ultrasonic Testing:
- Tsis tas yuav muaj qhov sib txuas nruab nrab, tuaj yeem siv rau kev ntsuas kub thiab kev kub ceev ntawm cov yeeb nkab steel ntxhib.

e. Kev Ntsuas Penetrant:
- Siv cov fluorescence thiab dyeing los kuaj xyuas qhov tsis xws luag ntawm cov kav hlau.

• Chemical Composition Analysis

1. Infrared CS Analyser: Ntsuas C thiab S cov ntsiab lus hauv ferroalloys, steelmaking raw khoom, thiab hlau.

2. Direct Reading Spectrometer: Txheeb xyuas cov ntsiab lus xws li C, Si, Mn, P, S, Cr, Mo, Ni, Cu, Al, W, V, Ti, B, Nb, As, Sn, Sb, Pb, thiab Bi hauv cov qauv khoom.

3. TSIS TXAUS SIAB: Txheeb xyuas cov ntsiab lus roj, tshwj xeeb N thiab O.

• Kev tshuaj xyuas ntawm Mechanical

1. Tensile Test: Ntsuas kev ntxhov siab thiab deformation los txiav txim siab cov khoom siv zog (YS, TS) thiab cov ntawv ntsuas plasticity (A, Z). Longitudinal, transverse qauv, cov yeeb nkab seem, arc-puab, thiab cov qauv ncig (inch: 10mm, 12.5mm) yog siv. Qhov ntau thiab tsawg thiab tuab ntawm cov qauv raug kuaj nrog cov ntsuas ntsuas qhov ntev. Nco tseg: Elongation tom qab tawg ntawm cov hnoos qeev muaj feem xyuam rau qhov loj me (GB/T 1760).

2. Impact Test: CVN, notched C-type, V-type, thiab J-value (Joules ib square centimeter). Tus qauv qauv loj: 10 × 10 × 55 hli, tsis yog qauv qauv loj: 5 × 10 × 55 hli.

3. Hardness Test: Ntsuas ntau hom hardness xws li Brinell hardness (HB), Rockwell hardness (HRC), Vickers hardness (HV), thiab lwm yam.

4. Hydrostatic Test: Txiav txim siab kuaj, lub sij hawm stabilization, qhov twg \( p=\frac{2S\delta}{D} \).

• Cov cuab yeej cuab tam

1. Flattening Test: Ua rau cov qauv ncig thiab C-zoo li tus qauv (thaum S/D > 0.15), qhov twg \( H=\frac{{(1+2)S} }{{\alpha + \frac{S}{D}}} \) and \(L \) ranges from 40 to 100 mm. Chav tsev ntev deformation coefficient yog nruab nrab ntawm 0.07 thiab 0.08.

2. Ring Tensile Test: Ua nrog qhov ntev (L) ntawm 15mm, tsis muaj cov kab nrib pleb suav tias yog tsim nyog.

3. Expansion and Flaring Test: Lub kaum sab xis saum toj kawg nkaus yog teem rau 30 degree, 40 degree, lossis 60 degree.

4. Bending Test: tuaj yeem hloov qhov kev sim flattening (rau cov kav dej loj).

• Kev kuaj tsis yog kev puas tsuaj (NDT)

1. Kev tshuaj xyuas qhov tsis zoo ntawm cov khoom siv Weld Seams: Kev tshuaj xyuas qhov chaw ntawm cov vuam seams rau qhov tsis xws li cov kab nrib pleb, kev nkag tsis tiav, thiab tsis muaj fusion kom ntseeg tau tias vuam zoo.

2. Internal Cavity Inspection: Tshawb xyuas qhov tsis xws luag xws li cov kab nrib pleb, scaling, hlau kos duab, khawb, qhov, qhov projections, me ntsis, thiab corrosion hauv kab noj hniav.

3. Kev tshuaj xyuas qhov xwm txheej: Kev kuaj pom sab hauv ntawm cov khoom tau teev tseg raws li kev xav tau rau qee yam khoom (xws li, turbo twj, cav) tom qab ua haujlwm.

4. Kev tshuaj xyuas los ua ke: Siv cov khoom siv video endoscopes rau kev tshuaj xyuas kev sib dhos zoo thaum xav tau; Tom qab sib dhos los yog ua tiav cov txheej txheem, xyuas seb qhov kev sib dhos ua haujlwm ntawm cov khoom ua tau raws li cov duab kos lossis cov kev xav tau, thiab txheeb xyuas qhov teeb meem ntawm kev sib dhos.

5. Kev tshuaj xyuas cov khib nyiab: Kev tshuaj xyuas cov khoom seem, cov khoom txawv teb chaws, lossis cov khib nyiab hauv cov khoom.

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