ASTM A795 yog dab tsi?
A795 specification npog dub thiab kub -dipped zinc-coated (galvanized) welded thiab seamless steel yeeb nkab rau kev siv tiv thaiv hluav taws. Cov yeeb nkab tuaj yeem khoov, tab sis nws tsis yog tsim rau khoov ntawm qhov kub thiab txias nyob rau hauv txoj kab uas hla ntawm qhov khoov yog tsawg dua kaum ob npaug ntawm txoj kab uas hla sab nraud ntawm cov yeeb nkab tau khoov. Cov hlau yuav tsum ua raws li cov tshuaj muaj pes tsawg leeg. Txhua qhov ntev ntawm cov yeeb nkab yuav tsum raug kuaj xyuas hydrostatic yam tsis muaj dej los ntawm cov yeeb nkab phab ntsa. Raws li lwm txoj hauv kev ntsuas hydrostatic, thiab thaum lees txais los ntawm cov neeg yuav khoom, txhua cov yeeb nkab yuav tsum tau sim nrog cov txheej txheem hluav taws xob uas tsis yog - puas tsuaj. Thaum kawg, flattening xeem yuav tsum tau ua nyob rau hauv cov yeeb nkab raws li, hluav taws xob-kuj-welded yeeb nkab, thiab rauv-welded yeeb nkab.
Astm a795 a795m qhov ntev
Astm a795 yeeb nkab specifications
Txuj: ASTM A795 Cov Lus Qhia Tshwj Xeeb
Txheej txheem:ES, SMLS
Qhov ntev: 21.3mm - 273.1mm, 1/2 "- 10", DN15-DN250
Thickness: 2.11mm-7.8mm, 3-18 hli
Qib Steel: ASTM A795 Gr. A, ASTM A795 Gr. B
Nto Txheej: Dub lacquer txheej thiab Kub-Dipped Zinc-Coated (Galvanized), FBE
Hom kawg: Plain, Bevelled, Threaded, Grooved, Lub xub pwg nyom
Txoj Kev Sib Koom: Haum, Flange, Coupling, Clamp, Yeeb Nkab Lub xub pwg, Vuam
Pipe Machining: Vuam, dabtsi yog khoov, qhov Drilling, Punching, Swaging, Tapering, Flaring, Expanding
A795 Tshuaj Requirement
| Kev xav tau tshuaj | ||||
| Lub ntsiab | Kev sib xyaw, max, % | |||
| C | Mn | P | S | |
| Hom E (hluav taws xob{0}}kuj-welded yeeb nkab) & Hom S (seamless yeeb nkab) | ||||
| Qhib-hearth, hluav taws xob- cub tawg lossis yooj yim- oxygen: | ||||
| Qib A | 0.25 | 0.95 | 0.035 | 0.035 |
| Qib B | 0.30 | 1.20 | 0.035 | 0.035 |
| Hom F (qhov cub-welded yeeb nkab) | ||||
| Qhib -heart, hluav taws xob- cub tawg, lossis cov pa oxygen yooj yim | 0.050 | 0.045 | ||
A795 Mechanical Requirements
| Kuaj Siab | |||
| rauv-welded | Seamless thiab Electric-Resistance-Welded | ||
| psi | kPa ua | psi | kPa ua |
| 700 | [4800] | 700 | [4800] |
| 700 | [4800] | 700 | [4800] |
| 700 | [4800] | 700 | [4800] |
| 1000 | [6900] | 1000 | [6900] |
| 1000 | [6900] | 1000 | [6900] |
| 1000 | [6900] | 1000 | [6900] |
| 1000 | [6900] | 1000 | [6900] |
| 1000 | [6900] | 1000 | [6900] |
| 1200 | [8300] | 1200 | [8300] |
| 1200 | [8300] | 1200 | [8300] |
| C | C | 1200 | [8300] |
| C | C | 1200 | [8300] |
| C | C | 1200 | [8300] |
| C | C | 1000 | [6900] |
A795 Hluav Taws Xob Hoobkas
