對(duì)焊彎頭滄州民鋼管道主要產(chǎn)品有:對(duì)焊彎頭,大口徑對(duì)焊彎頭,對(duì)焊彎頭廠家,對(duì)焊彎頭價(jià)格,河北對(duì)焊彎頭,滄州對(duì)焊彎頭,不銹鋼對(duì)焊彎頭,碳鋼對(duì)焊彎頭,合金對(duì)焊彎頭,厚壁對(duì)焊彎頭,對(duì)焊耐磨彎頭,直縫對(duì)焊彎頭,大型對(duì)焊彎頭,鋼板對(duì)焊彎頭,16MN對(duì)焊彎頭,Q345B對(duì)焊彎頭,Q235B對(duì)焊彎頭,304對(duì)焊彎頭,90度對(duì)焊彎頭,長(zhǎng)半徑對(duì)焊彎頭,短半徑對(duì)焊彎頭,1.5D對(duì)焊彎頭,1D對(duì)焊彎頭,1.5倍對(duì)焊彎頭,國(guó)標(biāo)對(duì)焊彎頭,二標(biāo)對(duì)焊彎頭,非標(biāo)對(duì)焊彎頭,等各種材質(zhì)標(biāo)準(zhǔn)型號(hào)的大口徑對(duì)焊彎頭加工制造銷
對(duì)焊彎頭
對(duì)焊彎頭英文(Welded elbow)是鋼板進(jìn)行壓制成彎頭片子后進(jìn)行兩片對(duì)接焊接成型的彎頭。一般對(duì)焊彎頭適合大口徑對(duì)焊彎頭和管道的對(duì)接,口徑從800-2020都可以使用對(duì)焊工藝。對(duì)焊彎頭按它的曲率半徑來(lái)分,可分為長(zhǎng)半徑對(duì)焊彎頭和短半徑對(duì)焊彎頭;按壓力等級(jí)來(lái)分,大約有十七種,和美國(guó)的管子標(biāo)準(zhǔn)是相同的,其中最常用的是STD和XS兩種;按彎頭的角度分,有45度對(duì)焊彎頭,有90度對(duì)焊彎頭和180度對(duì)焊彎頭及其它不同的角度的彎頭;按材料來(lái)分有:碳鋼,合金鋼和不銹鋼。對(duì)焊彎頭英文(Welded elbow)是鋼制熱壓成型或者鍛打成型的彎頭,它的連接形式就是直接將彎頭與鋼管對(duì)焊,對(duì)焊彎頭的主要制造標(biāo)準(zhǔn)一般是GB/T13401-2005、GB/T12459-2017、ASME B16.9、SH3409、HG/T21635、HG/T21631、SY/T0510、GB/T10752-1995。(1)對(duì)焊彎頭按它的曲率半徑來(lái)分,可分為長(zhǎng)半徑對(duì)焊彎頭和短半徑對(duì)焊彎頭。長(zhǎng)半徑對(duì)焊彎頭的曲率半徑等于1.5倍的管子外徑,即R=1.5D。短半徑對(duì)焊彎頭的曲率半徑等于管子外徑,即R=1D。式中的D為對(duì)焊彎頭直徑,R為曲率半徑。 如沒(méi)有特殊的說(shuō)明,一般選用的是1.5D的彎頭。
(2)若按壓力等級(jí)來(lái)分,大約有十七種,和美國(guó)的管子標(biāo)準(zhǔn)是相同的,有:Sch5s、Sch10s、Sch10、Sch20、Sch30、Sch40s、STD、Sch40、Sch60、Sch80s、XS;Sch80、Sch100、Sch120、Sch140、Sch160、XXS,其中最常用的是STD和XS兩種。
(3)按彎頭的角度分,有45度對(duì)焊彎頭,有90度對(duì)焊彎頭和180度對(duì)焊彎頭及其它不同的角度的彎頭。
(4)材料有:碳鋼,合金鋼和不銹鋼。
對(duì)焊彎頭的材質(zhì)劃分滄州民鋼管道編輯
碳鋼: ASTM/ASME A234 WPB、WPC
合金: ASTM/ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP 91-WP911、15Mo3 15CrMoV、 35CrMoV
不銹鋼:ASTM/ASME A403 WP 304-304L-304H-304LN-304N
ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti
ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347H
低溫鋼:ASTM/ASME A402 WPL3-WPL 6
高性能鋼: ASTM/ASME A860 WPHY 42-46-52-60-65-70
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