ASTM材料规范书ASTM Material Specifications.doc

ASTM材料规范书ASTM Material Specifications材料Material产品类型Product Form锻件Forgings铸件Castings板材Plates棒材Bars管材Tubular组号GroupNo公称标志NominalDesignation规格编号Spec. No等级Grade规格编号Spec. No.等级Grade规格编号Spec. No.等级Grade规格编号Spec. No.等级Grade规格编号Spec. No.等级Grade1.1CC-SiC-Mn-SiA105A350 LF2A216 WCB A515A516A537 7070Cl. 1 A675A105A350A69670LF2CA672A672 B70C70 1.2C-Si21/2Ni31/2NiC-Mn-SiA 350LF3 A352A352A216A352 LC2LC3WCCLCC A203A203 BE A350 LF3 A106C1.3CC-Si21/2Ni31/2NiC-Mn-SiA352 LCB A515A203A203A516 65AD65 A67565A672A672 B 65C 65 1.4CC-SiC-Mn-SiA350 LF1 A515A516 6060 A675A350A69660LF1BA106A672A672 BB 60C 60 1.5C-1/2MoA182F1A217A352WC1LC1A204A204ABA182F1A691CM-701.6C-1/2Mo1/2Cr-1/2Mo1Cr-1/2MoA387A387A387 2 Cl.12 Cl. 212 Cl. 1 A335A369A691P1FP11/2Cr1.7C-1/2Mo1/2Cr-1/2MoNi-1/2Cr-1/2Mo3/4Ni-Mo-3/4CrA182 F2 A217A217 WC4WC5 A204CA182 F2 A691CM-751.81Cr-1/2Mo1-1/4Cr-1/2Mo-Si2-1/4Cr-1MoA387A387A38712 Cl.211 Cl.122 Cl.1A691A335A369A691A335A369A691A335A3351CRP12FP121-1/4CRP11FP112-1/4CRP22FP221.91Cr-1/2Mo1-1/4Cr-1/2Mo-Si1-1/4Cr-1/2MoA182A182F12 Cl.2F11 Cl.2A217 WC6 A387 11 Cl.2A182A182A739F12 Cl.2F11 Cl.2B111.102-1/4Cr-1Mo3Cr-1Mo A182A182 F22 Cl.3F21 A217WC9A387A387 22 Cl.221 Cl.2A182A739A182 F22 Cl.3B2210.2F21 1.11Mn-1/2MoMn-s1/2Mo-1/2NiMn-1/2Mo-3/4NiC-Mn-SiA302A302A302A537A & BCDCL21.125Cr-1/2Mo5Cr-1/2Mo-SiA387A3875 Cl.15 Cl. 2A691A335A369A3355CRP5FP5P5b1.135Cr-1/2MoA182A182F5aF5A217C5A182F5a1.149Cr-1MoA182F9A217C12A192F9ASTM材料规范书(2)ASTM Material Specifications (2)材料Material产品类型Product Form锻件Forgings铸件Castings板材Plates棒材Bars管材Tubular组号GroupNo.公称标志NominalDesignation规格编号Spec. No.等级Grade规格编号Spec. No.等级Grade规格编号Spec. No.等级Grade规格编号Spec. No.等级Grade规格编号Spec. No.等级Grade2.118Cr-8NiA182A182F304F304HA351A351CF3CF8A240A240304304HA182A182A479A479F304F304H304304HA312A312A358A376A376A430A430TP304TP304H304TP304TP304HFP304FP304H2.216Cr-2Ni-2Mo18Cr-8Ni18Cr-13Ni-3Mo16Cr-12Ni-2Mo19Cr-10Ni-3MoA182A182F316F316HA351A351A351A351A351CF3ACF8ACF3MCF8MCG8MA240A240A240316316H317A182A182A479A479F316F316H316316HA312A312A358A376A376A430A430A312TP316TP316H316TP316TP316HFP316FP316HTP3172.318Cr-8Ni16Cr-12Ni-2MoA182A182F304LF316LA240A240304L316LA182A479A182A479F304L304LF316L316LA312A312TP304LTP316L2.418Cr-10Ni-TiA182A182F321F321HA240A240321321HA182A479A182A479F321321F321H321HA312A312A358A376A376A430A430TP321TP321H321TP321TP321HFP321FP321H2.518Cr-10Ni-CbA182A182A182A182F347F347HF348F348HA351CF8CA240A240A240A240347347H348348HA182A182A182A182A479A479A479A479F347F347HF348F348H347347H348348HA312A312A358A376A376A376A430A430A312A312TP347TP347HTP347TP347TP347HTP348FP347FP347HTP348TP348H2.625Cr-12Ni23Cr-12NiA351A351CH8CH20A240A240309S309H A312A358 TP309H309H 2.725Cr-20NiA182F310HA351CK20A240A240310S310HA182A479A479F310H310H310SA312A358TP310H310H2.820Cr-18Ni-6Mo22Cr-5Ni-3Mo-N25Cr-7Ni-4Mo-NA182A182A182F44F51F53A351CK3MCuNA240A240A240S31254S31803S32750A479A479A479 S31254S31803S32750 A312A358A789A790A789A790S31254S31254S31803S31803S32750S32750ASTM材料规范书(3)ASTM Material Specifications (3)材料Material产品类型Product Form锻件Forgings铸件Castings板材Plates棒材Bars管材Tubular组号GroupNo公称标志NominalDesignation规格编号Spec. No等级Grade规格编号Spec. No.等级Grade规格编号Spec. No.等级Grade规格编号Spec. No.等级Grade规格编号Spec. No.等级Grade3.135Ni-35Fe-20Cr-Cb28Ni-19Cr-Cu-MoB462N08020B463A351N08020CN7MB473N08020B464B468N08020N080203.299NiB160N02200B162N02200B160N02200B161B163N02200N022003.399Ni-Low CB160N02201B162N02201B160N022003.467Ni-30Cu67Ni-30Cu-SB564N04400B564 N04405 B127N04400B164B164 N04400N04405 B165B163 N04400N044003.572Ni-15Cr-8FeB564N06600B168N06600B166N06600B167B163N06600N066003.633Ni-42Fe-21CrB564N08800B409N08800B408N08800N163N088003.765Ni-28Mo-2FeB335N10665B333N10665B335N10665B622N106653.854Ni-16Mo-15Cr60Ni-22Cr-9Mo-3.5Cb62Ni-28Mo-5Fe70Ni-16Mo-7Cr-5Fe61Ni-16Mo-16Cr42Ni-21.5Cr-3Mo-2.3CuB574B564B335B573B574B425N10276N06625N10001N10003N06455N08825B575B443B333B434B575B424N10276N06625N10001N10003N06455N08825B574B446B335B573B574B425N10276N06625N10001N10003N06455N08825B622B622B622B423N10276N10001N06455N088253.947Ni-22Cr-9Mo-18FeB572N06002B435N06002B572N06002B622N060023.1025Ni-47Fe-21Cr-5MoB672N08700B599N08700B672N087003.1144Fe-25Ni-21Cr-MoB649N08904B625N08904B649N08904B677N089043.1226Ni-43Fe-22Cr-5Mo47Ni-22Cr-20Fe-7MoB621B581N08320N06985B620B582N08320N06985B621B581N08320N06985B622B622N08320N069853.1349Ni-25Cr-18Fe-6MoNi-Fe-Cr-Mo-Cu-Low CB581B564N06975N08031B582B625N06975N08031B581B649N06975N08031B622B622N06975N080313.1447Ni-22Cr-19Fe-6MoB581N06007B582N06007B581N06007B622N060073.1533Ni-2Fe-21CrNi-MoNi-Mo-CrB564N08810A494A494 N-12MVCW-12MW B409N08810B408N08810B407N08810ASTM材料规范书(4)ASTM Material Specifications (4)螺栓材料规格说明注释(1)Bolting Material Specifications Note (1)规格编号Specification No.等级Grade注释Notes规格编号Specification No.等级Grade注释NotesA193A307 BA320A354-(2)(3)(4)(5)2)(3)(6)-A449A453A540A564-630(7)(8)(9)(10)-(7)B164B165B335-N10665(11)(12)(13)(11)(12)(11)B408B473B574B574B637-N10276N06022N07718(11)(12)(13)(11)(11)(11)(11)结构材料Materials of Construction阀体和阀盖或阀帽材料Body and Bonnet or Cap Materials部件后缀Part No.SuffixASTM类别ASTMClassification材料类别MaterialClassification应用环境ServiceConditions无NoneA216 WCB碳钢Carbon Steel适用于温度高达537oC的非腐蚀性和氧化性应用场合。 (1) (4) (5)For service up to 1000oF where corrosion and oxidation are not afactor. (1) (4) (5)6A217 WC611/4铬，1/2钼11/4 CR, 1/2 Mo适用于温度高达537oC的应用场合。 (3) (4) (5)For service up to 1000oF. (3) (4) (5)9A217 WC921/4铬，1钼21/4 CR, 1 Mo适用于温度高达593oC、要求具有很好的抗蠕变强度的应用场合。(3) (4) (5)For service up to 1100oF where good creep strength is required.(3) (4) (5)5A217 C55%铬，1/2钼5% CR, 1/2 Mo适用于温度高达648oC的应用场合，具有最好的抗腐蚀和抗氧化性能以及更高的抗蠕变强度。For service up to 1200oF. Best corrosion and oxidation resistanceplus high creep strength are required.12A217 C129%铬，1钼9% CR, 1 Mo适用于温度高达648oC的应用场合，具有最好的抗腐蚀和抗氧化性能。For service up to 1200oF. Best corrosion and oxidation resistancethan other grades.2A351 LCC低碳钢Low Carbon Steel适用于温度范围为-45oC至343oC的应用场合。这种材料必须经过淬火和回火，以获得零度以下的张力和冲力特性。For service from 50oF to 650oF. This material must be quenchedand tempered to obtain tensile and impact properties needed atsubzero temperatures.阀内件材料Trim Materials部件型号后缀Part No.SuffixAPI阀内件编号API TrimNumber普通阀内件Nominal Trim阀座表面Seating Surfaces阀杆材料Stem Material温度TemperatureX1F6 / F6 (1)13铬ASTM A217 (CA15)13 Cr ASTM A217 (CA15)13铬 (410)13 Cr (410)593oC1100oFUF*5HF / HF (2)钨铬钴合金6Stellite 613铬 (410)13 Cr (410)648oC1200oFA9蒙乃尔 / 蒙乃尔 (4)Monel / Monel (4)蒙乃尔Monel蒙乃尔Monel232oC450oFL10316 / 316 (3)316不锈钢316 SS316不锈钢316 SS454oC850oFXUF*8F6 / HF (1) (2)13铬ASTM A217 (CA215)钨铬钴合金613 Cr ASTM A217 (CA 215)Stellite 613铬 (410)13 Cr (410)593oC1100oFAUF*11蒙乃尔 / HF (4) (2)Monel / HF (4) (2)蒙乃尔钨铬钴合金6 MonelStellite 6蒙乃尔Monel232oC450oFLUF*12316 / HF (3) (2)316不锈钢钨铬钴合金6 316 SSStellite 6316不锈钢316 SS454oC850oF结构材料：翻转式阀瓣止回阀Materials of Construction: Tilting Disc Check Valve序号NO部件名称PART NAME碳钢CARBON STEEL11/4 铬11/4 CHROME21/4 铬21/4CHROME9铬-1钼-V9Cr-1Mo-V316不锈钢316 STAINLESS30阀帽盖BONNET CAP碳钢CARBON STEELASTM A182等级F11/F22ASTM A182 GR F11/F22ASTM A182等级F22ASTM A182 GR F22ASTM A182等级F91ASTM A182 GRF91ASTM A182等级F316ASTM A182 GR F3162阀帽托架BONNET CARRIER碳钢CARBON STEEL碳钢CARBON STEEL碳钢CARBON STEEL碳钢CARBON STEEL碳钢CARBON STEEL98阀帽盖螺丝BONNET CAP SCREWASTM 193等级B7ASTM 193 GR B7ASTM 193等级B7ASTM 193 GR B7ASTM 193等级B7ASTM 193 GR B7ASTM 193等级B7ASTM 193 GR B7ASTM 193等级B7ASTM 193 GR B773止推环THRUST RINGAISI 4340或4140AISI 4340 OR 4140AISI 4340或4140AISI 4340 OR 4140AISI 4340或4140AISI 4340 OR 4140AISI 4340或4140AISI 4340 OR 4140AISI 4340或4140AISI 4340 OR 4140124分段环SEGMENT RINGAISI 4340或4140AISI 4340 OR 4140AISI 4340或4140AISI 4340 OR 4140AISI 4340或4140AISI 4340 OR 4140AISI 4340或4140AISI 4340 OR 4140AISI 4340或4140AISI 4340 OR 41406铰链盖螺丝HINGE CAP SCREWASTM 193等级B7ASTM 193 GR B7ASTM 193等级B7ASTM 193 GR B7ASTM 193等级B7ASTM 193 GR B7ASTM 193等级B7ASTM 193 GR B7ASTM 193等级B7ASTM 193 GR B755垫圈GASKET镀银低碳钢MILD STEELSILVER PLATED镀银低碳钢MILD STEELSILVER PLATED镀银低碳钢MILD STEELSILVER PLATED镀银低碳钢MILD STEELSILVER PLATEDASTM A182等级F316L镀银ASTM A182 GR F316LCHROME PLATED40铰链HINGEASTM A351等级CA-15ASTM A351 GR CA-15ASTM A351等级CA-15ASTM A351 GR CA-15ASTM A351等级CA-15ASTM A351 GR CA-15ASTM A351等级CA-15ASTM A351 GR CA-15ASTM A351等级CF8MASTM A351 GR CF8M41铰链销HINGE PINASTM A582等级416ASTM A582 GR 416ASTM A582等级416ASTM A582 GR 416ASTM A582等级416ASTM A582 GR 416ASTM A582等级416ASTM A582 GR 416ASTM A705等级630ASTM A705 GR 63011阀座环SEAT RING碳钢配置CO-CR-A镀层 CARBON STEELW/CO-CR-A OVERLAY316不锈钢或21/4铬配置CO-CR-A镀层316 SS OR 21/4 CRW/CO-CR-A OVERLAY316不锈钢或21/4铬配置CO-CR-A镀层316 SS OR 21/4 CRW/CO-CR-A OVERLAY316不锈钢配置CO-CR-A镀层316 SSW/CO-CR-A OVERLAY316不锈钢配置CO-CR-A镀层316 SSW/CO-CR-A OVERLAY71阀瓣DISCASTM A216等级WCB配置CO-CR-A镀层 ASTM A216 GR WCBW/CO-CR-A OVERLAYASTM A217等级WC6配置CO-CR-A镀层 ASTM A217 GR WC6W/CO-CR-A OVERLAYASTM A217等级WC9配置CO-CR-A镀层 ASTM A217 GR WC9W/CO-CR-A OVERLAYASTM A351等级8M配置CO-CR-A镀层 ASTM A351 GR 8MW/CO-CR-A OVERLAYASTM A351等级8M配置CO-CR-A镀层 ASTM A351 GR 8MW/CO-CR-A OVERLAY10阀体BODYASTM A216等级WCC3ASTM A216 GR WCC3ASTM A217等级WC62ASTM A217 GR WC62ASTM A217等级WC92ASTM A217 GR WC92ASTM A217等级C12AASTM A217 GR C12AASTM A351等级CF8MASTM A351 GR CF8M118垫片SHIM316不锈钢316SS316不锈钢316SS316不锈钢316SS316不锈钢316SS316不锈钢316SS126锁定装置LOCKING DEVICE316不锈钢316SS316不锈钢316SS316不锈钢316SS316不锈钢316SS316不锈钢316SS结构材料：Y形截止阀Materials of Construction: Y-Globe Valve序号NO部件名称PART NAME碳钢CARBON STEEL11/4 铬11/4 CHROME21/4 铬21/4CHROME9铬-1钼-V9Cr-1Mo-V316不锈钢316 STAINLESS10阀体BODYASTM A216 等级 WCB或WCC1 配置CO-CR-MO-NIASTM A216 GR WCB OR WCC1 W/CO-CR-MO-NIASTM A217 等级 WC6配置CO-CR-MO-NI ASTM A217 GR WC6W/CO-CR-MO-NI ASTM A217 等级 WC9配置CO-CR-MO-NI ASTM A217 GR WC9W/CO-CR-MO-NI ASTM A217 等级 C12A配置CO-CR-MO-NI ASTM A217 GR C12AW/CO-CR-MO-NI ASTM A351 等级 CF8M配置CO-CR-MO-NI ASTM A351 GR CF8MW/CO-CR-MO-NI 11阀座环SEAT RING碳钢配置CO-CR-MO-NI镀层CARBON STEELW/CO-CR-MO-NI OVERLAY316不锈钢或 21/4 CR配置CO-CR-MO-NI镀层316 SS OR 21/4 CRW/CO-CR-MO-NI OVERLAY316L不锈钢或 21/4 CR配置CO-CR-MO-NI镀层316L SS OR 21/4 CRW/CO-CR-MO-NI OVERLAY316不锈钢，配置CO-CR-MO-NI镀层 316 SS W/CO-CR-MO-NI OVERLAY 316L不锈钢，配置CO-CR-MO-NI镀层316 SS W/CO-CR-MO-NI OVERLAY16a螺母NUTASTM A194 等级 2HASTM A194 GR 2HASTM A194 等级 2HASTM A194 GR 2HASTM A194 等级 2HASTM A194 GR 2HASTM A194 等级 2HASTM A194 GR 2HASTM A194 等级 2HASTM A194 GR 2H16b螺母NUTASTM A194 等级 2HASTM A194 GR 2HASTM A194 等级 2HASTM A194 GR 2HASTM A194 等级 2HASTM A194 GR 2HASTM A194 等级 2HASTM A194 GR 2HASTM A194 等级 2HASTM A194 GR 2H19螺丝SCREWA193等级B7A193 GR B7A193等级B7A193 GR B7A193等级B7A193 GR B7A193等级B7A193 GR B7A193等级B7A193 GR B721顶举螺栓JACKING BOLTSA582等级416A582 GR 416A582等级416A582 GR 416A582等级416A582 GR 416A582等级416A582 GR 416A582等级416A582 GR 41673止推环2THRUST RING2AISI 4140或4340AISI 4140 OR 4340AISI 4140或4340AISI 4140 OR 4340AISI 4140或4340AISI 4140 OR 4340AISI 4140或4340AISI 4140 OR 4340AISI 4140或4340AISI 4140 OR 434030阀帽BONNET碳钢，配置CO-CR-MO-NICARBON STEEL W/CO-CR-MO-NIASTM A182等级F22配置CO-CR-MO-NI ASTM A182 GR F22 W/CO-CR-MO-NIASTM A182等级F22配置CO-CR-MO-NI ASTM A182 GR F22 W/CO-CR-MO-NIASTM A182等级F91配置CO-CR-MO-NI ASTM A182 GR F91 W/CO-CR-MO-NIASTM A182等级F316配置CO-CR-MO-NI ASTM A182 GR F316 W/CO-CR-MO-NI35压盖GLAND300系列不锈钢300 SERIES SST300系列不锈钢300 SERIES SST300系列不锈钢300 SERIES SST300系列不锈钢300 SERIES SST300系列不锈钢300 SERIES SST36压盖法兰GLAND FLANGE碳钢CARBON STEEL碳钢CARBON STEEL碳钢CARBON STEEL碳钢CARBON STEEL碳钢CARBON STEEL43低部板LOWER PLATE碳钢CARBON STEEL碳钢CARBON STEEL碳钢CARBON STEEL碳钢CARBON STEEL碳钢CARBON STEEL46填料PACKING石墨GRAPHITIC石墨GRAPHITIC石墨GRAPHITIC石墨GRAPHITIC石墨GRAPHITIC48护圈RETAINER11-13%铬11-13% CHROME11-13%铬11-13% CHROME11-13%铬11-13% CHROME11-13%铬11-13% CHROME11-13%铬11-13% CHROME48a护圈RETAINER316不锈钢316 SS316不锈钢316 SS316不锈钢316 SS316不锈钢316 SS316不锈钢316 SS55垫圈GASKET镀银低碳钢MILD STEEL WITHSILVER PLATE镀银低碳钢MILD STEEL WITHSILVER PLATE镀银低碳钢MILD STEEL WITHSILVER PLATE镀银低碳钢MILD STEEL WITHSILVER PLATEASTM A182等级F316L镀银ASTM A182 GR F316LCHROME PLATED62键KEYAISI 01AISI 01AISI 01AISI 01AISI 01AISI 01AISI 01AISI 01AISI 01AISI 0167阀杆导向STEM GUIDE碳钢CARBON STEEL碳钢CARBON STEEL碳钢CARBON STEEL碳钢CARBON STEEL碳钢CARBON STEEL70阀杆STEMASTM A582等级416ASTM A582 GR 416ASTM A582等级416ASTM A582 GR 416ASTM A582等级416ASTM A582 GR 416ASTM A582等级416ASTM A582 GR 416ASTM A705等级630ASTM A705 GR 63071阀瓣DISC碳钢，配置CO-CR-MO-NI镀层CARBON STEEL W/CO-CR-MO-NI OVERLAY316不锈钢或11/4铬配置CO-CR-MO-NI镀层316 SS OR 11/4 CR W/CO-CR-MO-NI OVERLAY316不锈钢或11/4铬配置CO-CR-MO-NI镀层316 SS OR 11/4 CR W/CO-CR-MO-NI OVERLAY316不锈钢配置CO-CR-MO-NI镀层316 SS W/CO-CR-MO-NI OVERLAY316不锈钢配置CO-CR-MO-NI镀层316 SS W/CO-CR-MO-NI OVERLAY72阀瓣螺母DISC NUT碳钢，配置CO-CR-MO-NI镀层CARBON STEEL W/CO-CR-MO-NI OVERLAY316不锈钢或11/4铬配置CO-CR-MO-NI镀层316 SS OR 11/4 CR W/CO-CR-MO-NI OVERLAY316不锈钢或11/4铬配置CO-CR-MO-NI镀层316 SS OR 11/4 CR W/CO-CR-MO-NI OVERLAY316不锈钢配置CO-CR-MO-NI镀层316 SS W/CO-CR-MO-NI OVERLAY316不锈钢配置CO-CR-MO-NI镀层316 SS W/CO-CR-MO-NI OVERLAY86托架CARRIER碳钢CARBON STEEL碳钢CARBON STEEL碳钢CARBON STEEL碳钢CARBON STEEL碳钢CARBON STEEL97螺栓BOLTASTM A193等级B7ASTM A193 GR B7ASTM A193等级B7ASTM A193 GR B7ASTM A193等级B7ASTM A193 GR B7ASTM A193等级B7ASTM A193 GR B7ASTM A193等级B7ASTM A193 GR B798螺栓BOLTASTM A193等级B7ASTM A193 GR B7ASTM A193等级B7ASTM A193 GR B7ASTM A193等级B7ASTM A193 GR B7ASTM A193等级B7ASTM A193 GR B7ASTM A193等级B7ASTM A193 GR B798a螺栓BOLTASTM A193等级B7ASTM A193 GR B7ASTM A193等级B7ASTM A193 GR B7ASTM A193等级B7ASTM A193 GR B7ASTM A193等级B7ASTM A193 GR B7ASTM A193等级B7ASTM A193 GR B7120接合器ADAPTER碳钢CARBON STEEL碳钢CARBON STEEL碳钢CARBON STEEL碳钢CARBON STEEL碳钢CARBON STEEL124分段环SEGMENT RINGAISI 4140或4340AISI 4140 OR 4340AISI 4140或4340AISI 4140 OR 4340AISI 4140或4340AISI 4140 OR 4340AISI 4140或4340AISI 4140 OR 4340AISI 4140或4340AISI 4140 OR 4340128圆柱COLUMN碳钢CARBON STEEL碳钢CARBON STEEL碳钢CARBON STEEL碳钢CARBON STEEL碳钢CARBON STEEL200执行机构ACTUATOR咨询厂家CONSULT FACTORY咨询厂家CONSULT FACTORY咨询厂家CONSULT FACTORY咨询厂家CONSULT FACTORY咨询厂家CONSULT FACTORY结构材料：闸阀Materials of Construction: Gate Valve序号NO部件名称PART NAME碳钢CARBON STEEL11/4 铬11/4 CHROME21/4 铬21/4CHROME9铬-1钼-V9Cr-1Mo-V316不锈钢316 STAINLESS50手轮HANDWHEELASTM A47 等级 32510ASTM A47 GR 32510ASTM A47 等级 32510ASTM A47 GR 32510ASTM A47 等级 32510ASTM A47 GR 32510ASTM A47 等级 32510ASTM A47 GR 32510ASTM A47 等级 32510ASTM A47 GR 3251031轭架套管YOKE SLEEVEASTM A148 合金 955ASTM A148 ALLOY 955ASTM A148 合金 955ASTM A148 ALLOY 955ASTM A148 合金 955ASTM A148 ALLOY 955ASTM A148 合金 955ASTM A148 ALLOY 955ASTM A148 合金 955ASTM A148