ASTM A672 C70 Carbon Steel EFW Pipe lus piav qhia
ASME SA672 / A672M-2019 tus qauv siv rau cov kav hlau siv nyob rau hauv nruab nrab qhov kub thiab txias siab, ua los ntawm cov hlab ntsha zoo steel phaj ntawm ntau cov tshuaj muaj pes tsawg leeg thiab qib zog, electrofused nrog cov hlau muab tub lim. Kev kho cua sov tuaj yeem lossis tsis tas yuav tsum tau ua kom tau raws li qhov xav tau ntawm kev ua haujlwm lossis ua kom tau raws li qhov xav tau ntawm daim ntawv thov tshwj xeeb. Ntau qhov kev xav tau ntxiv yog muab rau kev xaiv thaum xav tau kev kuaj ntxiv lossis tshuaj ntsuam xyuas. Feem ntau siv tau rau cov kav hlau uas muaj lub taub sab nraud tsis pub tsawg dua 16 ntiv tes (405 mm) thiab phab ntsa tuab tsis ntau dua 3 ntiv tes (75 hli). Lwm qhov ntau thiab tsawg ntawm cov kav dej steel ua raws li tag nrho lwm cov kev cai ntawm tus qauv no kuj tuaj yeem muab tau.
ASTM A672 qib c70 yeeb nkab tshuaj lom neeg muaj pes tsawg leeg
| Specification | Qib steel | Tshuaj muaj pes tsawg leeg | Lus hais | |||||
|---|---|---|---|---|---|---|---|---|
| C | Si | Mn | P | S | Ti | |||
| Cov kav dej rau kev pabcuam siab ASTM A672 Qib C70 |
-/A45 | -/0.17 | - | 0.98 | 0.035 | 0.035 | - | A672/ A672 |
| -/A50 | -/0.22 | - | ||||||
| CA55/A55 | 0.28 | - | ||||||
| B55 | -/0.20 | 0.13 ~0.45 |
||||||
| CB60/B60 | 0.24 | |||||||
| CB65/B65 | 0.28 | |||||||
| CB70/C70 | 0.31 | 1.30 | ||||||
| C55 | -/0.18 | 0.55 ~0.98 |
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| CC60/C60 | 0.21 | |||||||
| CC65/C65 | 0.24 | 0.79 ~1.30 |
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| CC70/C70 | 0.27 | |||||||
ASTM A672 qib c70 Pipe Mechanical Properties, Kos hauv qab ASTM A672 qib c70 yeeb nkab khoom
| ASTM A672 qib c70 Steel Yeeb Nkab Khoom | Qib Steel | BASE METAL MECHANICAL COMPOSITION | Vuam taw tes tensile zog (N / mm2) | Lus hais | |||
|---|---|---|---|---|---|---|---|
| Qhov taw qhia tawm (N / mm2) | Tensile zog (N / mm2) | Xeem Daim | Elongation (%) | ||||
| Cov kav dej rau kev pabcuam siab ASTM A672 qib c70 | -/A45 | -/165 | -/310~450 | - | -/30 | -/310~450 | A672/ A672 |
| -/A50 | -/185 | -/345~485 | -/28 | -/345~485 | |||
| CA55/A55 | 205 | 380~515 | 27 | 380~515 | |||
| B55 | -/205 | -/380~515 | -/27 | -/380~515 | |||
| CB60/B60 | 220 | 415~550 | 25 | 415~550 | |||
| CB65/B65 | 240 | 450~585 | 23 | 450~585 | |||
| CB70/C70 | 260 | 485~620 | 21 | 485~620 | |||
| C55 | -/205 | -/380~515 | -/27 | -/380~515 | |||
| CC60/C60 | 220 | 415~550 | 25 | 415~550 | |||
| CC65/C65 | 240 | 450~585 | 23 | 450~585 | |||
| CC70/C70 | 260 | 485~620 | 21 | 485~620 | |||
Daim ntawv thov
ASTM A672 C70 belongs rau qeb ntawm nruab nrab - siab kub siab - bearing welded steel kav, feem ntau yog siv nyob rau hauv piping systems nyob rau hauv high pressure / high kub tej yam kev mob. Tej yam xwm txheej muaj xws li:
Kev lag luam fais fab
Thermal Power Plants: Cov kav dej tseem ceeb (kub tsawg dua lossis sib npaug li 480 degree)
Boiler feedwater systems: Siab - cov kav dej siab (tsim siab Ntau dua lossis sib npaug li 10MPa)
Chav Turbines: Siab -kub rov ua kom sov cov kav dej
Kev lag luam Petrochemical
Roj Refineries: Hydrogenation reactor inlet thiab qhov hluav taws xob pipelines (resistant H₂ corrosion ib puag ncig)
Ethylene Cog: Cracking gas kis pipelines (kub 300-450 degree)
Ammonia Synthesis: Siab -siab synthesis voj pipelines
Roj thiab roj tsheb thauj mus los
Offshore Platforms: Siab - cov kav dej tso dej siab (tiv taus rau seawater corrosion + siab bearing)
LNG Nroj Tsuag: Tsawg-kub mus rau siab-kub hloov cov kav dej (-46℃~ 200℃kev khiav haujlwm)
Muaj Boiler Systems
Muaj Boilers: Siab -kub taub hau txuas kav
Cov Khoom Siv Hluav Taws Xob Hluav Taws Xob Hluav Taws Xob: Siab - cov kav dej kub hloov pauv siab
Kev kuaj thiab tshuaj xyuas
Ntim thiab shipping
