DIN 17100 St44-2 SSAW Pipe
Kev kho deg: Liab qab, Dub Painting, Varnished, Galvanized, Anti-corrosion txheej, thiab lwm yam.
Daim ntawv thov: Siv rau roj thiab roj, dej xa mus, engineering, offshore tej yaam num.
DIN 17100 St 44-2 SSAW Pipe Description
DIN 17100 St 44-2 kauv welded yeeb nkab yog ib tug kub dov carbon steel yeeb nkab. Nws lub zog tensile (σb) yog li ntawm 430 txog 580 MPa rau thicknesses tsawg dua 3 hli, thiab los ntawm 410 txog 540 MPa rau thicknesses ntau dua 3 hli. Lub zog tawm los (σs) yog yam tsawg 275 MPa.
DIN17100 St 44-2 SSAW Steel Pipe Specification
| Sab nraud | 355.6 hli -2320 hli |
| Phab ntsa Thickness | 7-50 hli |
| Ntev | 5.8m / 6m / 11.8m / 12m / 18m / 32m |
| Xaus | Dub xaus / Bevelled xaus / Plain xaus |
| Kev kho saum npoo | Liab qab, Dub Painting, Varnished, Galvanized, Anti-corrosion txheej, thiab lwm yam. |
| Daim ntawv thov | Siv rau roj thiab roj, dej xa mus, engineering, offshore tej yaam num. |
| MOQ | 3 Tons |
St 44-2 Welded Pipe Chemical element ntsiab lus (%)
| Cheebtsam | C | P | S | N |
|---|---|---|---|---|
| MIN | - | - | - | - |
| MAX | 0.21 | 0.05 | 0.05 | 0.009 |
① When the thickness of the product is t>100, C cov ntsiab lus yog raws li kev pom zoo.
Nitrogen cov ntsiab lus raug tso cai kom tshaj li qhov teev tseg yog tias qhov siab tshaj plaws ntawm phosphorus yog {{0}}.005% rau 0.0 01% N. Txawm li cas los xij, cov ntsiab lus nitrogen yuav tsum tsis pub tshaj 0.12% rau kev soj ntsuam yaj thiab 0.014% rau kev soj ntsuam cov khoom tiav. Txawm li cas los xij, cov ntsiab lus nitrogen yuav tsum tsis pub tshaj 0.12% rau kev soj ntsuam yaj thiab 0.014% rau kev tshuaj xyuas cov khoom.
(iii) Silicon yuav tsum tsis pub tshaj {{0}}.55% rau kev soj ntsuam yaj thiab manganese yuav tsum tsis pub tshaj 1.6%. Rau kev soj ntsuam cov khoom tiav, silicon yuav tsum tsis pub tshaj 0.60% thiab manganese yuav tsum tsis pub tshaj 1.70%.
St44-2 SSAW Pipe Mechanical zog
| WT t mm |
Tensile zog σb Mpa |
Yield Point σs Mpa |
Elongation δ % |
|---|---|---|---|
| t＜3 | 430~580 | Ntau dua lossis sib npaug li 275 | 12~18 |
| 3 Tsawg dua lossis sib npaug t Tsawg dua lossis sib npaug rau 16 | 410~540 | Ntau dua lossis sib npaug li 275 | 20~22 |
| 16＜t Tsawg dua lossis sib npaug li 40 | 410~540 | Ntau dua lossis sib npaug rau 265 | 20~22 |
| 40＜t Tsawg dua lossis sib npaug rau 63 | 410~540 | Ntau dua lossis sib npaug li 255 | 19~21 |
| 63＜t Tsawg dua lossis sib npaug rau 80 | 410~540 | Ntau dua lossis sib npaug li 245 | 18~20 |
| 80＜t Tsawg dua lossis sib npaug rau 100 | 410~540 | Ntau dua lossis sib npaug rau 235 | 18~20 |
② U qhia tias kub-dov, tsis-kub kho; N qhia tias normalized
③ cuam tshuam lub zog nqus: qhov nruab nrab ntawm peb qhov kev xeem rau cov txiaj ntsig kev xeem. Qhov tsawg kawg nkaus tus nqi nruab nrab ntawm 23 lossis 27J, tso cai tsuas yog ib tus nqi hauv qab super 30% (qhov siab tshaj plaws).
Cov txheej txheem tsim khoom rau DIN 17100 St 44-2 kauv welded kav:
Uncoiling: Uncoil steel kauj kom nkag mus rau hauv cov kab ntau lawm. → Leveling: Flatten steel phaj kom paub meej qhov smoothness. → Ntug trimming: Trim cov npoo ntawm steel phaj kom tsis txhob curling. → Pre-bending: Pre-khoov cov npoo ntawm Cov hlau phaj sab nraud → Sib sau ua ke: Pub cov hlau phaj rau hauv lub tshuab ua kom tsim tau ib lub voj voog → Vuam: Siv txoj hauv kev xws li arc vuam lossis laser vuam los koom nrog cov hlau phaj ua ke. → Tiav: du thiab tshem tawm cov impurities xws li Raws li burrs los ntawm weld seam. → Kev tshuaj xyuas: Ua cov kev kuaj xyuas zoo ntawm cov yeeb nkab welded kom paub tseeb tias nws ua tau raws li cov kev qhia tshwj xeeb. → Kev tiv thaiv corrosion: Siv tshuaj tiv thaiv corrosion los txhim kho cov yeeb nkab txoj sia. kev thauj mus los rau lawv qhov chaw.
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