Tsab ntawv tam sim no: GB / T 3091-2022(Hloov GB / T 3091-2015)
Luam tawm los ntawm: Standardization Administration ntawm Tuam Tshoj (SAC)
Txheej txheem cej luam
GB/T 3091(Welded Steel Pipes for Low-Pressure Fluid Conveyance) yogSuav teb tus qauvuas qhia covkev cai rau welded steel kavsiv los thaujdej, cua, roj, roj, thiab lwm yam tsawg - cov kua dej siabhauvcivil, industrial, thiab mechanical applications.
Cov kav dej no feem ntau siv hauv:
Kev tsim kho dej thiab kev tiv thaiv hluav taws
HVAC ( Cua sov, qhov cua, thiab cua txias)
Structures scaffolding thiab handrails
Agricultural irrigation
Tsawg- cov roj thiab cov kav dej siab siab (tsis yog- tseem ceeb)
Tus qauv siv rauncaj seam welded steel kavtsim los ntawmsiab -frequency resistance welding (HFW/ERW). Nws suav nrog cov kev cai rauqhov ntev, qhov hnyav, kev xa khoom, kev kuaj, thiab kev kos npe.
✅ GB/T 3091 yogfeem ntau dav siv tus qauv rau dav dav - lub hom phiaj welded steel kavhauv Suav teb thiab ntau lub khw thoob ntiaj teb.
Scope
|
Parameter |
Kev piav qhia |
|
Hom yeeb nkab |
Electric Resistance Welded (ERW), Ncaj Seam |
|
Kev tsim khoom |
Siab -Frequency Resistance Vuam (HFW) |
|
Txoj kab uas hla |
DN6 rau DN600 (NPS 1/8 "mus rau 24") |
|
Phab ntsa Thickness |
Lub teeb, txheem, thiab hnyav ntsuas kev xaiv |
|
Hom kawg |
Plain xaus, threaded xaus (nrog los yog tsis muaj couplings), beveled xaus |
|
Txheej txheej xaiv |
Dub (tsis muaj xim),kub-dip galvanized (feem ntau), kua roj vanish-coated |
Nco tseg: Tus qauvtsis siv rau siab -siab, siab- kub, lossis qaub (H₂S) qhov chaw pabcuam.
Khoom Qib (Steel Hom)
Lub hauv paus steel khoom feem ntau ua raws liGB/T 3094los yogGB/T 1591, thiab cov qib uas muaj xws li:
|
Qib |
Sib npaug |
Kev piav qhia |
|
Q195 |
Tsawg- carbon steel |
Tsawg zog, haum rau me me - cov kav dej |
|
Q215 |
Tsawg- carbon steel |
General -lub hom phiaj, lub zog nruab nrab |
|
Q235 |
ASTM A53 Qib A / B, S235JR |
Feem ntau siv dav; zoo weldability thiab formability |
|
Q355 |
S355JR, ASTM A500 |
Lub zog siab dua rau kev siv cov qauv |
✅ Cov kav dej feem ntau cim nrog covqib steel, e.g., Q235B, qhia txog qib B.
Cov Lus Qhia Tseem Ceeb
|
Kev xav tau |
Kev piav qhia |
|
Vuam |
Longitudinal seam; tsis muaj hlau filler; puv fusion |
|
Kev kho cua sov |
Tsis xav tau rau Q195–Q235; normalization yuav tsum tau rau Q355 |
|
Dimensional Tolerances |
Kev txwv nruj rau sab nraud (OD), phab ntsa thickness, ncaj, thiab ovality |
|
Hydrostatic Test |
Yuav tsum tau rau tag nrho cov kav dej tshwj tsis yog raug zam (xws li, cov kav dej galvanized yuav raug kuaj ua ntej galvanizing) |
|
Tsis yog -Kev Ntsuas Kev Puas Tsuaj (NDT) |
100% Eddy Current Testing (ECT)los yogKev kuaj ultrasonic (UT)ntawm weld seam |
|
Galvanizing (yog tias tsim nyog) |
Yuav tsum ua raws liGB/T 13912- Hlau Txheej - Kub Dip Galvanized Coatings ntawm Hlau thiab Hlau Khoom |
|
- Coating Mass |
Ntau dua lossis sib npaug li 300 g / m² (nruab nrab), Ntau dua lossis sib npaug ntawm 275 g / m² (hauv zos) rau DN Tsawg dua lossis sib npaug li 50 mm; siab dua rau cov kav dej loj |
|
- Kev tshwm sim |
Uniform, du, tsis muaj pob liab qab, ntau dhau dross, lossis flux residues |
|
Mechanical Properties |
Tensile zog, yield zog, thiab elongation kuaj ib batch |
|
Bending Test |
Yuav tsum tau rau cov kav dej nrog DN Tsawg dua los yog sib npaug ntawm 65 mm los xyuas kom meej qhov kev sib raug zoo |
Marking thiab ntim
Txhua lub yeeb nkab yuav tsum tau cim kom meej nrog:
- Tus neeg tsim khoom lub npe lossis lub cim lag luam
- Txheem tus lej:GB/T 3091
- Cov yeeb nkab loj (DN lossis OD × WT)
- Qib steel (piv txwv li, Q235B)
- Hnub tsim khoom lossis batch naj npawb
- "Galvanized" los yog "Zn" yog coated
Ntim: Bundled nrog steel strips, tiv thaiv kawg, haum rau hiav txwv los yog av thauj.
Cov ntawv thov siv
|
Kev lag luam |
Daim ntawv thov |
|
Kev tsim kho |
Cov khoom siv dej, hluav taws kub sprinkler systems, scaffolding |
|
Municipal |
Kev faib dej hauv nroog |
|
HVAC |
Cov kav dej kub thiab cua txias |
|
Ua liaj ua teb |
Irrigation systems |
|
Kev lag luam |
Tsawg- cua siab, roj, thiab roj kab |
Sib piv nrog Lwm Cov Qauv
|
Txuj |
Daim ntawv thov |
Sau ntawv |
|
GB/T 3091 |
Tsawg-kev thauj cov kua dej |
ERW, galvanized ntau |
|
GB/T 9711 |
Pipeline thauj khoom (roj / roj) |
Sib npaug rau API 5L, siab dua |
|
API 5L |
Kab yeeb |
Cov txheej txheem thoob ntiaj teb, kev ua haujlwm siab dua |
|
ASTM A53 |
Kev tsim qauv & dej kev pabcuam |
Ze tshaj thoob ntiaj teb sib npaug rau GB / T 3091 |
|
SIB 1387 |
UK tus qauv rau dej / roj |
Zoo sib xws scope, tam sim no loj superseded |
ASTM A53 Qib Bfeem ntau suav hais tias yogze tshaj thoob ntiaj teb sib npaugrau GB/T 3091 Q235.
Cov lus piav qhia
|
Feature |
Specification |
|
Txuj |
GB/T 3091-2022 |
|
Hom yeeb nkab |
ERW (HFW), ncaj seam |
|
Qhov Loj |
DN6 - DN600 (1/8 "- 24") |
|
Cov Qib Siab |
Q195, Q215, Q235, Q355 |
|
Txheej |
Dub los yogkub-dip galvanized |
|
Kev sim |
Hydrotest, ECT/UT, tensile, khoov |
|
Xaus |
Plain, threaded (nrog coupling), beveled |
|
Daim ntawv thov |
Tsawg-cov kua dej siab, cov qauv, kev tiv thaiv hluav taws |
