ASTM A312 yeeb nkab,tiv tauj pebkom tau txais kev tsocai dawb thiab qauv!
ASTM A312 Khoom Specification
Qhov kev qhia tshwj xeeb no suav nrog seamless, ncaj-seam welded, thiab hnyav hnyav ua haujlwm welded stainless hlau yeeb nkab npaj rau siab - kub thiab kev pabcuam corrosive.
Txoj kev tsim khoom: Seamless vs. Welded vs. HCW
Raws li koj qhov kev thov tshwj xeeb siab thiab ib puag ncig, ASTM A312 specification txhais tau peb txoj kev tsim khoom sib txawv:
Seamless Yeeb Nkab (SMLS):Tsim tsis muaj vuam seam, muab kev ntsuas siab tshaj plaws thiab kev ua haujlwm ruaj khov rau qhov tseem ceeb siab - siab thiab qhov kub thiab txias ib puag ncig.
Welded yeeb nkab (WLD):Tsim los siv cov txheej txheem vuam tsis siv neeg yam tsis muaj qhov sib ntxiv ntawm cov hlau muab tub lim. Rau cov yeeb nkab nominal qhov ntau thiab tsawg (NPS) 14 thiab me dua, siv ib txoj hlua txuas txuas txuas. Rau qhov ntau thiab tsawg dua NPS 14, cov kav dej tau tsim los siv ob ntu ntev ntawm cov khoom lag luam tiaj tus tom qab kev pom zoo nruj heev.
Hnyav txias-Ua haujlwm (HCW) Yeeb
ASTM A312 Stainless hlau yeeb nkabyuav tsum tau ua los ntawm kev siv txias ua hauj lwm tsis pub tsawg tshaj 35% txo nyob rau hauv thickness ntawm ob phab ntsa thiab weld mus rau ib tug welded yeeb nkab ua ntej lub kawg anneal. Tsis siv neeg muab tub lim yuav tsum tau siv los ua lub vuam. Ua ntej ua haujlwm txias, qhov vuam yuav tsum tau kuaj 100% radiographically.
Welded yeeb nkab thiab HCW yeeb nkab ntawm 14 thiab me dua NPS 14 yuav tsum muaj ib qho kev sib txuas ntev. Tom qab kev pom zoo los ntawm tus neeg yuav khoom, cov yeeb nkab welded thiab HCW yeeb nkab nrog NPS ntau dua NPS 14 yuav tsum muaj ib qho kev sib txuas ntev los yog yuav tsum tau tsim los ntawm kev tsim thiab vuam ob qhov ntev ntawm cov khoom tiaj tus.
Nrov ASTM A312 Stainless Hlau Qib
ASME SA 312 tus qauv npog ntau yam ntawm austenitic stainless hlau qib tsim los ua kom tau raws li ntau hom kev tiv thaiv-corrosion profiles:
General Corrosion Resistance:TP304, TP304L, TP304H, TP304LN
Marine & High Chemical Resistance:TP316, TP316L, TP316H, TP316Ti, TP317, TP317L
Siab -Tsuas Cov Txheej Txheem Kev ruaj ntseg:TP321, TP321H, TP347, TP347H, TP310S
ASTM A312 Tshuaj muaj pes tsawg leeg
| Qib | Cov pa roj carbon | Silicon | Manganese | Chromium | Nickel | Molybdenum | Sulfur | Phosphorous |
|---|---|---|---|---|---|---|---|---|
| TIAB SA 304 | 0,08 | 1,0 | 2.00 | 18.0 – 20.0 | 8.0 – 11.0 | – | 0,03 | 0,045 |
| TP 304 L | 0,035 | 1,0 | 2.00 | 18.0 – 20.0 | 8.0 – 13.0 | – | 0,03 | 0,045 |
| TIAB SA 316 | 0,08 | 1,0 | 2.00 | 16.0 – 18.0 | 10.0 – 14.0 | 2.00 – 3.00 | 0,03 | 0,045 |
| TP 316 L | 0,035 | 1,0 | 2.00 | 16.0 – 18.0 | 10.0 – 15.0 | 2.00 – 3.00 | 0,03 | 0,045 |
| TIAB SA 321 | 0,08 | 1,0 | 2.00 | 17.0 – 19.0 | 9.0 – 12.0 | – | 0,03 | 0,045 |
ASTM A312 Mechanical Properties
| Qib | UNS | Tensile zog Min, Ksi [MPa] |
Yield zog Min, Ksi [MPa] |
|---|---|---|---|
| TIAB SA 304 | S30400 | 75 [515] | 30 [205] |
| TP 304 L | S30403 | 70 [485] | 25 [170] |
| TP 304 H | S30409 | 75 [515] | 30 [205] |
| TP 304 N | S30451 | 80 [550] | 35 [240] |
| TP 304 LN | S30453 | 75 [515] | 30 [205] |
| TIAB SA 309S | S30908 | 75 [515] | 30 [205] |
| TP 310 S | S31008 | 75 [515] | 30 [205] |
| TIAB SA 316 | S31600 | 75 [515] | 30 [205] |
| TP 316 L | S31603 | 70 [485] | 25 [170] |
| TP 316 H | S31609 | 75 [515] | 30 [205] |
| TP 316 N | S31651 | 80 [550] | 35 [240] |
| TP 316 LN | S31653 | 75 [515] | 30 [205] |
| TIAB SA 317 | S31700 | 75 [515] | 30 [205] |
| TIAB SA 317L | S31703 | 75 [515] | 30 [205] |
ASTM A312 Stainless hlau kav OD kam rau ua
| NPS | ASTM A312 OD kam rau ua | |||
|---|---|---|---|---|
| + | – | |||
| nti | mm | nti | mm | |
| 1/8~1 1 /2 > 1 1 /2~4 > 4~8 > 8~18 > 18~26 > 26~34 > 34~48 |
1/64(0.015) 1/32(0.031) 1/16(0.062) 3/32(0.093) 1/8(0.125) 5/32(0.156) 3/16(0.187) |
0.4 0.8 1.6 2.4 3.2 4.0 4.8 |
1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) |
0.8 0.8 0.8 0.8 0.8 0.8 0.8 |
ASTM A312 Stainless hlau kav WT kam rau ua %
| NPS | ASTM A312 WT kam rau ua,% | |
|---|---|---|
| + | – | |
| 1/8-2 1 /2 | 20.0 | 12.5 |
| 3 ~ 18, t / D Tsawg dua lossis sib npaug li 5% | 22.5 | 12.5 |
| 3~18, t/D> 5% | 15.0 | 12.5 |
| Ntau tshaj los yog sib npaug rau 20, welded | 17.5 | 12.5 |
| Ntau dua lossis sib npaug li 20, seamless, t / D Tsawg dua lossis sib npaug li 5% | 22.5 | 12.5 |
| ≥ 20, seamless, t/D> 5% | 15.0 | 12.5 |
ASTM A312 Welded Thiab Seamless Yeeb Nkab Loj
ASTM A312 stainless hlau yeeb nkab qhov ntevthiab qhov ntau thiab tsawg yuav tsum ua raws li ANSI B36.19, nominal pipe size (NPS) ranges from NPS 1/8 [10.29 mm] to NPS 30 [762 mm], Teem caij rau phab ntsa thickness ntawm Sch 5s mus rau Sch 80s, tus nqi teev hais txog qhov loj me, nruab nrab phab ntsa thiab cov phab ntsa yam tsawg kawg nkaus yog muaj raws li qhov kev thov.
Kev kho cua sov
Tag nrhoASTM A312 tubeyuav tsum tau muab tso rau hauv qhov cua sov-kho mob, kho qhov kub thiab txias rau 304/L thiab 316/L yog 1900 deg F (1040 deg C) yam tsawg kawg nkaus thiab ces quenched nyob rau hauv dej los yog sai txias.
Hydrostatic lossis Nondestructive Electric Test
Txhua lub yeeb nkab yuav tsum raug kuaj xyuas tsis muaj hluav taws xob lossis kev sim hydrostatic.
- Kev kuaj thiab tshuaj xyuas
- Mechanical Tests
- Grain Size Determinations
- Weld Decay Tests
- Transverse lossis Longitudinal Tension Test
- Hydrostatic lossis Nondestructive Electric Test
- Flattening Test (xaiv)
- Radiographic Examination (xaiv)
- Intergranular Corrosion Test (xaiv)
- Weld Decay Test (xaiv)
Cov ntaub ntawv siv
- ASTM A999 / A999M - Txuj Specification rau General Requirements rau Alloy thiab Stainless Hlau Yeeb
- ASTM A1016 / A1016M - Txuj Specification rau General Requirements rau Ferritic Alloy Steel, Austenitic Alloy Steel, thiab Stainless Hlau Tubes
- ASME B36.10 - Welded thiab Seamless Wrought Hlau Yeeb Nkab
- ASME B36.19- Stainless hlau yeeb nkab
