Dab tsi yog ASTM A688 koj khoov cov raj kav hlau loj rau cov tshuaj lom?
Tso lus
Dab tsi yog ATM A688 / A688M?
ASTM A688 / A688M yog tus qauv txheem tshwj xeeb rau koj-} bend hauv cov dej sov stainless leeg thiab xav tau corrosion tsis kam kuaj. Cov hlab yog siv hauv ntau cov ntawv thov, suav nrog cov nroj tsuag muaj zog, suav nrog cov nroj tsuag hluav taws xob thiab cov nroj tsuag tshuaj, vim stainless hlau lub siab {4} kub ua hauj lwm thiab kav ntev.
Qhov tseem ceeb ntawm Astm A688 U - bend tub:
Txheem Cov Qauv: A688 / A688m npog seamless thiab welded owenitic stainless yas.
Daim ntawv thov: thawj daim ntawv thov yog nyob rau hauv tubular pub dej sov, qhov twg U {{} Khoov daim ntawv yooj yim tshem tawm thiab tu cov raj backls.
Cov raj hom: ob qho tib si uas tsis sib xws thiab welded tub yog suav nrog, nrog high - Zoo Tig rau Welded Hlaws kom ntseeg tau tias muaj kev ntseeg siab.
Qhov ntau thiab tsawg: cov ntaub ntawv tshwj xeeb tshaj yog them rau sab nraud ntawm 5/8 txog 1 nti (15.9 rau 25.4 MM) thiab phab ntsa thickness ntawm 0.0 hli) lossis ntau dua.
Cov Khoom Siv: Lub tubing yog xaiv rau nws qhov siab - kub ua hauj, thiab durabilion - kub, kev xeb ib puag ncig.
Kev Kuaj: Tsis muaj kev sim siab, xws li kev kuaj hluav taws xob, thiab kuaj xyuas rau corrosion tsis kam yog ua kom zoo.
Tiav: Tubes tuaj yeem muab rau hauv ntau cov tiav, suav nrog anealing, pickling, lossis ci ntsa iab, nyob ntawm qhov yuav tsum tau ua.
Nyem kom tau txais cov qauv dawb
ASTM A688 U KHWV STUINLER HLOB HLOB HLOB
Kev Kho Cua SovYuav tsum tau thov rau u {{{- bend thaj chaw ntxiv kwv yees li ntawm tangent taw tes ntawm u} bend tom qab khoov, yog hais tias teev.
Ncaj ntev: Max 30000 hli
Ceg Ntev: 12000 mm, cov ntsiab lus ntawm tangency ntawm khoov rau ceg kawg
Dabtsi yog khoov Radius: Max 1500 hli
Txoj kev raug: cov duab txias, ua haujlwm txias
Ncaj ntevsib npaug rau 2 x ceg ntev + 3.1416 x r
AVTM A688 Stainless Hlau Tshuaj Muaj pes tsawg
| Elem - ent | Teem nqi | TPTP304 | TPP3L | TPP04LN | TP316 | Tp316L | Tp316LN | TP XM-29 | TP 304N | TP 316N |
|---|---|---|---|---|---|---|---|---|---|---|
| % | Tsis yog | S30400 | S30403 | S30453 | S31600 | S31603 | S31653 | S24000 | S30451 | S31651 |
| C, max | 0.08 | 0.035 | 0.035 | 0.08 | 0.035 | 0.035 | 0.060 | 0.08 | 0.08 | |
| Mn, max | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 2.00 | 11.50-14.50 | 2.00 | 2.00 | |
| Ph, Max | 0.040 | 0.040 | 0.040 | 0.040 | 0.040 | 0.040 | 0.060 | 0.040 | 0.040 | |
| S, max | 0.030 | 0.030 | 0.030 | 0.030 | 0.030 | 0.030 | 0.030 | 0.030 | 0.030 | |
| Si ,, max | 0.75 | 0.75 | 0.75 | 0.75 | 0.75 | 0.75 | 1.00 | 0.75 | 0.75 | |
| Ni | 8.00-11.00 | 8.00-13.00 | 8.00-13.00 | 10.00-14.00 | 10.00-15.00 | 10.00-15.00 | 2.25-3.75 | 8.00-1.00 | 10.00-14.00 | |
| Cr | 18.00-20.00 | 18.00-20.00 | 18.00-20.00 | 16.00-18.00 | 16.00-18.00 | 16.00-18.00 | 17.00-19.00 | 18.00-20.00 | 16.00-18.00 | |
| Mo | - | - | - | 2.00-3.00 | 2.00-3.00 | 2.00-3.00 | - | - | 2.00-3.00 | |
| N | - | - | 0.10-0.16 | - | - | 0.10-0.16 | 0.20-0.40 | 0.10-0.16 | 0.10-0.16 |
ASTM A688 U khoov stainless hlau raj sab saud ntev ntev
ASTM A688 U Bend Raj Pheej Ua Si yuav tsum ua raws li kev ua kom zoo dua li 10% yog tsawg dua 2}}} 10% ntawm cov nominal phab ntsa tuab, Bent cheeb tsam kev ua siab ntev yuav tsum tsis muaj tus nqi tsawg dua li kev txiav txim siab los ntawm kab zauv los ntawm kab zauv los ntawm kab zauv los ntawm kab zauv los ntawm kab zauv los ntawm kab zauv los ntawm kev txiav txim siab: 4r + d).
Tube ceg ntev ntev
| Ceg ntev, ft (m) | Ntxiv rau kev thev taus, hauv (hli) |
|---|---|
| <= 20 (6) | 1/8 (3.2) |
| >20(6), <=30(9) | 5/32 (4.0) |
| >30 (9), <=40 (12.2) | 3/16 (4.8) |
Squareness ntawm xaus kev thev taus
| Raj od, hauv, (mm) | Kev kam, hauv, (hli) |
|---|---|
| <=5.8 (15.9) | 0.010 (0.25) |
| >5.8 (15.9), <=1 (25.4) | 0.016 (0.4) |
Piv rau astm A249 / A268 cov lus qhia tshwj xeeb, t t68 xav tau ntau dua thiab cov kev ntsuam xyuas tshwj xeeb, thiab ntau dua kev ua haujlwm hnyav.
Ntim
Txhua lub tubing yuav tsum ntim thiab thaiv cov yam ntxwv xws li tiv thaiv kev puas tsuaj hauv kev tuav thiab kev thauj mus los. Cov thawv yuav tsum tau tsim nyob rau hauv xws li ib tug yam uas tsis muaj ntsia hlau, stairs, lossis cov ntsia hlau zoo sib xws tom qab lub thawv tom qab tso rau hauv lub thawv. Lub thawv yuav raug kab nrog cov ntaub ntawv yas lossis cov ntaub ntawv pov tseg vapor thiaj li los tiv thaiv kab mob chloride sib kis ntawm lub raj thaum tuav kev tsheb, tsheb thauj mus los, thiab cia.
Pob hauv cov ntawv tso dej tsis huv thiab muab tso rau hauv cov plaub hau plywood. ASME SA688 SA213 TAP316L Stainless Hlau U Bend Tube cov duab raws li hauv qab no:
