Category
類 別

Trade-
Mark
牌 號

Equivalent to China Standard
相當(dāng)國標(biāo)

Characteristics & application
特性和用途

Equivalent to AWS
相當(dāng)AWS

Hard-surfacing

硬

面

堆

焊

D 667

EDZCr-B-15

HRc≥48. Resistance to wear, gas corrosion and oxidation. Hardfacing of blast furnace hopper and cracker part.
HRc≥48，耐磨、耐氣蝕、抗氧化。堆焊高爐料鐘、破碎機(jī)件

D 802

EDCoCr-A-03

HRc38-47. Resistance to heat, wear and corrosion. Hardfacing of high temperature part such as the edge of thermo-cutter.
HRc38-47，耐熱、耐蝕、耐磨。堆焊高溫工件如熱剪切刀刃

ECoCr-A

D 812

EDCoCr-B-03

HRc45-50. Resistance to heat, wear and corrosion. Hardfacing of high temperature part such as internal-combustion engine valve.
HRc45-50，耐熱、耐蝕、耐磨。堆焊高溫工件如內(nèi)燃機(jī)閥

ECoCr-B

D 822

HRc≥53. Resistance to Wear and heat, bad shock resistance. Hardfacing of rotating blade wheel of boiler.
HRc≥53，耐熱、耐磨，但抗沖擊性差。堆焊鍋爐旋轉(zhuǎn)葉輪

D 832

EDCoCr-C-03

HRc≥50. Wear and heat resistance. Hardfacing of high temperature part such as hot-rolling guided way.
HRc≥50，耐熱、耐磨。堆焊高溫工件如熱軋導(dǎo)軌

ECoCr-C

D 842

EDCoCr-D-03

HRc28-38. Corrosion and thermo-fatigue resistance, work harding. Hardfacing of hot forging die.
HRc28-38，耐蝕、抗熱疲勞，具有加工硬化性。堆焊熱鍛模

Cast iron

鑄

鐵

Z 308

EZNi

Pure nickel, excellent general properties. Used to weld thin cast iron part and repair welding machined surface, such as guided way of machine tool.
純鎳，綜合性能好。鑄鐵薄件及加工面補(bǔ)焊用，如機(jī)床導(dǎo)衛(wèi)

ENi-Cl

Z 408

EZNiFe

Iron nickel, high strength and excellent ductility. Repair welding of important gray cast iron and nodular cast iron, such as cylinder cap.
鎳鐵，強(qiáng)度高、塑性好。重要灰鑄鐵及球鐵焊補(bǔ)用，如汽缸蓋

ENiFe-Cl

Z 508

EZNiCu-1

Copper nickel, good machinability and bad crack resistance. Repair welding of sand hole and gray cast iron machined surface subject to no load.
鎳銅，易加工，但抗裂性較差。不受力的灰鑄鐵加工面及砂眼補(bǔ)焊

ENiCu-B

Copper alloys

銅

合

金

Cu 107

ECu

Red copper, atmosphere and sea water corrosion and excellent electric conductivity. Welding of red copper such as electrical copper row.
紫銅，耐大氣，海水腐蝕，導(dǎo)電性好。紫銅焊接用，如導(dǎo)電銅排

ECu

Cu 207

ECuSi

Silicon bronze, corrosion resistance and high strength. Welding of copper, silicon bronze and brass.
硅青銅，耐蝕、強(qiáng)度高。銅、硅青銅及黃銅焊接用

ECuSi

Cu 227

ECuSnB

Tin phosphor bronze, corrosion resistance and high strength. Welding of copper, silicon bronze and brass.
錫磷青銅，耐蝕、強(qiáng)度高。銅、硅青銅及黃銅焊接用

ECuSn-C

Cu 237

ECuAl

Aluminum bronze, wear and corrosion and high strength. Welding or surfacing of copper alloys.
鋁青銅，耐磨、耐蝕，強(qiáng)度高。銅合金焊接或堆焊用

ECuAl-A2

Aluminum alloys

鋁

合

金

Al 109

TAl

Pure aluminum, excellent corrosion resistance and middle strength. Welding of pure aluminum.
純鋁，耐蝕性好，但強(qiáng)度不高，純鋁焊接用

E1100

Al 209

TAlSi

Silicon aluminum, good crack resistance and wide range of usage. Welding of aluminum alloys other than aluminum magnesium alloys.
鋁硅，抗裂性好，通用性大。鋁合金焊接用，不宜焊接鋁鎂合金

E4043

Al 309

TAMn

Manganese aluminum, corrosion resistance and high strength. Welding of aluminum alloys.
鋁錳，強(qiáng)度高，耐蝕。鋁合金焊接用

E3003

Nickel alloys

鎳合金

Ni 102

ENi-1

Pure nickel. Welding and surfacing of nickel and nickel to steel.
純鎳，用于鎳、鎳與鋼的焊接與堆焊

ENi-1

Ni 207

ENiCu-7

Copper nickel. Welding and surfacing of copper nickel and copper nickel to steel.
鎳銅，用于鎳銅、鎳銅與鋼的焊接與堆焊

ENiCu-7

Category

類 別

Trade
mark

牌 號

Chemical comPOSTTTION

主要成份(%)

Characteristics & application

特性和用途

Equivalent to AWS

相當(dāng)AWS

Hardfacing

硬

面

堆

焊

S 101

C3 Cr28 Ni4
Si3.5 Fe Rem.

HRc48-54. Resistance to wear, gas corrosion and oxidation. Hardfacing of bucket tooth and case pump.
HRc48-54，耐磨、耐氣蝕、抗氧化。堆焊鏟斗齒，泵套

S 111

C1 Cr29 W5
Co Rem.

HRc38-47. Resistance to wear and corrosion at high-temperature. Hardfacing of high temperature and pressure valve.
HRc38-47，高溫下耐磨、耐蝕。堆焊高溫高壓閥門

ECoCr-A

S 112

C1.5 Cr29 W8
Co Rem.

HRc45-50. Resistance to wear and corrosion at high-temperature. Hardfacing of valve and hot-rolling pass.
HRc45-50，高溫下耐磨、耐蝕。堆焊閥門，熱軋孔型

ECoCr-B

S 113

C2.5 Cr30 W17
Co Rem.

HRc≥55. Wear and heat resistance at high temperature, bad shock resistance. Hardfacing of screw charging carriage.
HRc≥55，高溫下耐磨、耐熱，但抗沖擊性差。堆焊螺旋送料機(jī)用

S 114

C2.5 Cr30 W12
Co Rem.

HRc≥53. Wear and heat resistance at high temperature, bad shock resistance. Hardfacing of three-cone bit.
HRc≥53，高溫下耐磨、耐熱，但抗沖擊較差。堆焊牙輪鉆頭

ECoCr-C

Copper

alloys

銅

合

金

S 201

Sn1 Si0.3Mn0.3
Cu Rem.

Good mechanical properties and crack resistance. Gas welding and argon arc welding of red copper.
機(jī)械性能好，抗裂性好。紫銅氣焊及氬弧焊用

ERCu

S 211

Si3 Mn1
Cu Rem.

Good mechanical properties. Argon arc welding of copper alloys and MIG brazing of steel.
機(jī)械性能好，銅合金氬弧焊及鋼的MIG釬焊用

ERCuSi-Al

S 212

Sn5 Cu Rem.

Wear resistance. Argon arc welding of copper alloys and surfacing of steel.
耐磨性好。銅合金氬弧焊及鋼的堆焊用

ERCuSn-A

S 213

Sn8 Cu Rem.

Wear resistance. Argon arc welding of copper alloys and surfacing of steel.
耐磨性好。銅合金氬弧焊及鋼的堆焊用

ERCuSn-C

S 214

Al7.5 Cu Rem.

Wear and corrosion resistance. Argon arc welding of copper alloys and surfacing of steel.
耐磨、耐蝕。銅合金氬弧焊及鋼的堆焊用

ERCuAl-A1

S 215

Al9 Cu Rem.

Wear and corrosion resistance. Argon arc welding of copper alloys and surfacing of steel.
耐磨、耐蝕。銅合金氬弧焊及鋼的堆焊用

ERCuAl-A2

S 221

Cu60 Sn1 Si0.3
Zn Rem.

Melting point is about 890℃. Gas welding and carbon arc welding of brass, also braze welding of copper, steel and cast iron.
熔點約890℃。黃銅氣焊及碳弧焊用，也可釬焊銅、鋼、鑄鐵

S 221F

Cu60 Sn1 Si 0.3
Zn Rem.

S221 welding rod coated with flux.
外涂焊劑的S221焊絲

S 222

Cu58Sn0.9Si0.1
Fe0.8 Zn Rem.

Melting point is about 880℃. Gas welding and carbon arc welding of brass, also braze welding of copper, steel and cast iron.
熔點約880℃。黃銅氣焊及碳弧焊用，也可釬焊銅、鋼、鑄鐵

RBCuZn-C

S 222F

Cu58Sn0.9Si0.1
Fe0.8 Zn Rem.

S222 welding rod coated with flux.
外涂焊劑的S222焊絲

RBCuZn-C

S 223

Cu59 Sn0.6
Zn Rem.

Melting point is about 900℃. Braze welding of copper, steel and cast iron.
熔點約900℃。銅、鋼、鑄鐵釬焊用

RBCuZn-A

S 224

Cu62 Si0.5
Zn Rem.

Melting point is about 905℃. Gas welding and carbon arc welding of brass, also braze welding of copper, steel and cast iron.
熔點約905℃。黃銅氣焊及碳弧焊用，也可釬焊銅、鋼、鑄鐵

Copper
alloys

銅

合

金

S 225

Cu48 Ni10
Zn Rem.

Melting point is about 935℃ and high strength. Braze welding of steel, nickel and carbide alloys.
熔點約935℃。高強(qiáng)度,釬焊鋼、鎳及硬質(zhì)合金用

RBCuZn-D

S 225F

Cu48 Ni10
Zn Rem.

S225 welding rod coated with flux.
外涂焊劑的S225焊絲

RBCuZn-D

S 226

Cu60 Sn0.3
Si0.2 Zn Rem.

Melting point is about 900℃. Gas welding of brass, also braze welding of copper, steel and cast iron.
熔點約900℃。黃銅氣焊用，也可釬焊銅、鋼、鑄鐵

S 227

Cu58Sn0.9Ni0.5
Si0.1 Fe0.8
Zn Rem.

Melting point is about 880℃. Gas welding and carbon arc welding of brass, also braze welding of copper, steel and cast iron.
熔點880℃。黃銅氣焊及碳弧焊用，也可釬焊銅、鋼、鑄鐵

RBCuZn-B

S 229

Cu55 Ni6 Mn4
Zn余

Melting point is about 920℃, high strength. Braze welding of steel, nickel and hard carbide.
熔點約920℃。高強(qiáng)度,釬焊鋼、鎳及硬質(zhì)合金用

Aluminum alloys

鋁

合

金

S 301

Al≥99.5

Good ductility and corrosion resistance. Gas welding and argon arc welding of pure aluminum.
塑性好、耐蝕。純鋁氣焊、氬弧焊用

ER1100

S 311

Si5 Al Rem.

Corrosion resistance, wide range of usage. Gas welding and argon arc welding of aluminum alloys other than high magnesium alloys.
抗裂性好，通用性大。鋁合金氣焊、氬弧焊用。不宜用高鎂合金

ER4043

S 321

Mn1.3 Al Rem.

Good corrosion resistance, weldability and ductility. Gas welding and argon arc welding of aluminum alloys.
良好的耐蝕性、可焊性及塑性。鋁合金氣焊、氬弧焊用

S 331

Mg5 Mn0.4
Al Rem.

Corrosion resistance and high strength. Argon arc welding of aluminum alloys.
耐蝕，強(qiáng)度高。鋁合金氬弧焊用

ER5183

Category
類 別

Trade-mark
牌號

Specification
規(guī) 格

Melting
Point
熔點(℃)

Chemical
comPOSTTTION
主要成份(%)

Application
用 途

Equivalent
to AWS
相當(dāng)AWS

Copper
zinc

銅鋅

L103

Wire & rod
絲

885-888

Cu54 Zn Rem.

Brazing of copper, bronze and steel, subjected to low load.
釬焊銅、青銅和鋼等受力不大工件

L104

Foil
箔

890-930

Cu57 Mn2
Co2 Zn Rem.

Brazing of carbide cutting tool.
釬焊硬質(zhì)合金刀具

Copper
phosphorus

銅磷

L201

Cast rod, wire & rod, powder
鑄條、絲、粉

710-800

P7 Cu Rem.

Brazing of copper and copper alloys.
釬焊銅及銅合金

BCuP-2

L204

Cast rod, wire
鑄條、絲

640-815

P5 Ag15
Cu Rem.

Brazing of copper, copper alloys, silver and molybdenum etc.
釬焊銅及銅合金、銀、鉬等金屬。

BCuP-5

L205

Cast rod, wire & rod, powder
鑄條、絲、箔

640-800

P6 Ag5
Cu Rem.

Brazing of copper and copper alloys.
釬焊銅及銅合金

BCuP-3

L207

Cast rod, wire & rod
鑄條、絲

640-770

P7 Ag5
Cu Rem.

Brazing of copper and copper alloys.
釬焊銅及銅合金

BCuP-7

L209

Cast rod, wire
鑄條、絲

684-710

P7 Ag2
Cu Rem.

Brazing of copper and copper alloys.
釬焊銅及銅合金。

BCuP-6

 Silver
base

銀基

L302

Wire & rod
絲

745-775

Ag25 Cu40
Zn Rem.

Brazing of copper, copper alloys, steel and stainless steel etc.
釬焊銅及銅合金、鋼及不銹鋼等

L303

Wire & rod
絲

660-725

Ag45 Cu30
Zn余

Brazing of copper, copper alloys, steel and stainless steel etc.
釬焊銅及銅合金、鋼及不銹鋼等

BAg-5

L303F

Flux coated rod
涂藥絲

660-725

Ag45 Cu30
Zn Rem.

L303 coated with flux, the same application as L303.
外涂釬劑的L303，用途與L303相同

BAg-5

L304

Foil
箔

690-775

Ag50 Cu34
Zn Rem.

Brazing of copper, copper alloys and steel etc.
釬焊銅及銅合金、鋼等

BAg-6

L308

Wire & rod
絲

779-780

Ag72 Cu Rem.

Brazing of copper and nickel under vacuum or reducing protective atmosphere.
銅和鎳的真空或還原保護(hù)氣氛釬焊

BAg-8

L312

Wire & rod
絲

595-605

Ag40.Cu.Zn.Cd

Brazing of copper, copper alloys, steel and stainless steel etc.
釬焊銅及銅合金、鋼及不銹鋼等

L313

Wire & rod
絲

625-635

Ag50.Cu.Zn.Cd

Brazing of copper, copper alloys, steel and stainless steel etc.
釬焊銅及銅合金、鋼及不銹鋼等

BAg-1a

L321

Wire & rod

絲

615-650

Ag56.Cu.Zn.Sn

Brazing of copper, copper alloys, steel and stainless steel etc.
釬焊銅及銅合金、鋼及不銹鋼等

BAg-7

L323

Wire & rod
絲

665-755

Ag30.Cu.Zn.Sn

Brazing of copper, copper alloys, steel and stainless steel etc.
釬焊銅及銅合金、鋼及不銹鋼等

L325

Wire & rod
絲

645-685

Ag45.Cu.Zn.Sn

Brazing of copper, copper alloys, steel and stainless steel etc.
釬焊銅及銅合金、鋼及不銹鋼等

BAg-36

L326

Wire & rod
絲

650-720

Ag38.Cu.Zn.Sn

Brazing of copper, copper alloys, steel and stainless steel etc.
釬焊銅及銅合金、鋼及不銹鋼等

BAg-34

Aluminum base

鋁基

L400

Cast rod, wire & rod
鑄條、絲

577-582

Si11.5
Al Rem.

Brazing of aluminum and aluminum alloys.
鋁及鋁合金的釬焊

BAlSi-4

L401

Cast rod
鑄條

525-535

Si5 Cu28
Al Rem.

Brazing of aluminum and aluminum alloys.
鋁及鋁合金的釬焊

Tin lead

錫鉛

L600

Wire & rod
絲

183-185

Sn60 Sb≤0.8
Pb Rem.

Soldering of fusible metals and heat-treated part.
易熔金屬及熱處理件的釬焊

60Sn

L601

Wire & rod
絲

183-227

Sn18 Sb2
Pb Rem.

Soldering of copper, copper alloys and galvanized iron plain sheet.
銅及銅合金、鍍鋅鐵皮的釬焊。

18Sn

L602

Wire & rod
絲

183-256

Sn30 Sb2
Pb Rem.

Soldering of copper, brass, copper alloys and galvanized iron plain sheet.
銅、黃銅、鐵、鍍鋅鐵皮的釬焊

30Sn

L603

Wire & rod
絲

183-235

Sn40 Sb2
Pb Rem.

Soldering of copper, copper alloys, steel and zinc parts.
銅及銅合金、鋼、鋅制零件的釬焊

40Sn

L604

Wire & rod
絲

183-222

Sn90 Sb≤0.15
Pb Rem.

Soldering of copper and steel for food and medicine field.
食品、醫(yī)療所需銅、鋼等金屬的釬焊

90Sn

L605

Wire & rod
絲

232-240

Ag5 Sn95

Soldering of copper and steel for electrical and food field.
電器、食品所需銅、鋼等金屬的釬焊

L608

Wire & rod
絲

295-305

Sn5.5 Ag2.5
Pb Rem.

Soldering of copper, copper alloys, steel and stainless steel.
銅及銅合金、鋼及不銹鋼的釬焊

Nickel base

鎳基

L702

Powder
粉

970-1000

Cr7 B3 Si4
Ni Rem.

Brazing of stainless steel under vacuum or protective atmosphere.
不銹鋼真空或保護(hù)氣氛釬焊

BNi-2

Category
類 別

Trade-mark
牌 號

Product name
名 稱

Characteristics & application
特性和用途

Gas
welding

氣焊

CJ301

Copper gas welding flux
銅氣焊熔劑

Melting point is about 650℃, flux for gas welding and brazing of copper and copper alloys.
熔點約650℃，銅及銅合金氣焊或釬焊的助熔劑

CJ401

Aluminum gas welding flux
鋁氣焊熔劑

Melting point is about 560℃, flux for gas welding of aluminum and aluminum alloys.
熔點約560℃，鋁及鋁合金氣焊的助熔劑

Silver
brazing

銀釬焊

QJ101

Silver brazing flux
銀釬焊熔劑

Brazing flux of copper, copper alloys, steel and stainless steel within 550-750℃.
在550-750℃范圍釬焊銅及銅合金、鋼及不銹鋼的助熔劑

QJ102

Silver brazing flux
銀釬焊熔劑

Brazing flux of copper, copper alloys, steel and stainless steel within 600-850℃.
在600-850℃范圍釬焊銅及銅合金、鋼及不銹鋼的助熔劑

QJ102A

Silver brazing flux
銀釬焊熔劑

Brazing flux of copper, copper alloys, steel and stainless steel within 600-850℃. Non agglomeration.
在600-850℃范圍釬焊銅及銅合金、鋼及不銹鋼。不易結(jié)塊

QJ112

Silver brazing paste flux

膏狀銀釬焊熔劑

Brazing flux of copper, copper alloys, steel and stainless steel within 600-850℃.
在600-850℃范圍釬焊銅及銅合金、鋼及不銹鋼的助熔劑

QJ103

Silver brazing flux
銀釬焊熔劑

Brazing flux of copper, copper alloys, steel and stainless steel within 550-750℃.
在550-750℃范圍釬焊銅及銅合金、鋼及不銹鋼的助熔劑

Aluminum brazing

鋁釬焊

QJ201

Aluminum brazing flux
鋁釬焊熔劑

Brazing flux of aluminum and aluminum alloys within 450-620℃.
在450-620℃范圍釬焊鋁及鋁合金的助熔劑

QJ207

Aluminum brazing flux
鋁釬焊熔劑

Brazing flux of aluminum and aluminum alloys within 560-620℃.
在560-620℃范圍釬焊鋁及鋁合金的助熔劑

Category
類 別

Trade-
mark
牌 號

Chemical
comPOSTTTION
化學(xué)成份(%)

Hardness
硬 度

Application
用 途

 Oxy-
Acetylene
Flame
spray-
using

氧

乙

炔

焰

噴

焊

F103

Cr10 B1.5 Si3 Ni Rem.

HRc 25

F101

Cr10 B2.5 Si3 Ni Rem.

HRc 45

Spray-fusing of parts resistance to wear and corrosion, such as valve, the rotator and piston of pump.
耐磨、耐蝕件的噴焊，如閥門、泵轉(zhuǎn)子、泵柱塞

F101Fe

Cr10 B2.5 Si3 Fe10

Ni Rem.

HRc 45

Spray-fusing of corrosion-resistant parts, such as axle and stigma.
耐磨件的噴焊，如軸類、汽門

F102

Cr16 B4 Si4 Ni Rem.

HRc 60

Spray-fusing of parts resistance to wear, corrosion and high temperature oxidation, such as die and piston.
耐磨、耐蝕、抗高溫氧化工件的噴焊，如模具、柱塞

F102Fe

Cr16 B4 Si4 Fe15

Ni Rem.

HRc 60

Spray-fusing of corrosion-resistant parts, such as axle and cold die.
耐磨件的噴焊，如軸類、冷模具

F105

F102+50%WC

HRc 60

Spray-fusing of parts resistance to grain-wear , such as guide plate, scraper and blade of fan.
抗磨粒磨損場合的噴焊，如導(dǎo)板、刮板、風(fēng)機(jī)葉片

F105Fe

F102Fe+35%WC

HRc 60

Spray-fusing of parts resistance to grain-wear, such as guide plate, scraper and blade of fan.
抗磨粒磨損場合的噴焊，如導(dǎo)板、刮板、風(fēng)機(jī)葉片

F108

F102+80%WC

HRc 60

Spray-fusing of parts resistance to strong grain-wear and free machining, such as harrow teeth of dredger.
抗強(qiáng)烈磨粒磨損，無需加工場合的噴焊，如挖泥船耙齒

F301

Cr5 B4 Si4 Ni30

Fe Rem.

HRc 45

Spray-fusing of vulnerable parts of agricultural machinery and mining machinery, such as gear and axletree.
農(nóng)機(jī),礦山機(jī)械易損件的噴焊，如齒輪，車軸

Track iron powder

軌鐵粉

Cr5 B1.5 Si3 Ni30

Fe Rem.

HRc 28

Repair spray-fusing of defects such as scratch and concavity of railroad track.
鐵路鋼軌擦傷、低塌等缺陷的修復(fù)噴焊

Oxy-acetylene flame spraying

氧

乙

炔

焰

噴

涂

F111

Cr5 B1.5 Si3 Ni30

Fe Rem.

HB 150

Spraying of bearing and cutting parts etc.
軸承、切削件等的噴涂

F113

Cr10 B1.5 Si3 Ni Rem.

HB 250

Spray-fusing or spraying, such as roll, piston and axle of wear and corrosion resistance.
噴涂亦可噴焊，如滾筒、柱塞、耐蝕耐磨軸等

F313

Cr15 B1.5 Fe Rem.

HB 250

Spraying of dryer of papermaking and axle.
造紙烘缸、軸類的噴涂

F314

Cr18 Ni9 B1.5 Fe Rem.

HB 250

Spraying of axle.
軸類噴涂

F412

Sn10 P0.3 Cu Rem.

HB 80

Spraying of axle and bearing.
軸、軸承的噴涂

F512

復(fù)合Al5Ni95

Backing spray of transition layer between base and working layer.
噴涂層的基體與工作層之間過渡（打底）層用噴涂

PTA

hardfacing

等

離

子

弧

噴

焊

F221

Cr26 W5 B0.7 Co Rem.

HRc 43

PTA hardfacing of sealing surface of high temperature and high pressure valve and the edge of hot shearing tool.
高溫高壓閥門密封面、熱剪切刃口的等離子噴焊

F223

Cr21 W5 B1.5 Co Rem.

HRc 40

PTA hardfacing of parts resistance to wear and corrosion at high temperature, such as valve under high temperature and high pressure, and blower.
高溫下耐磨耐蝕件的噴焊，如高溫高壓閥門、鼓風(fēng)機(jī)

F321

Cr13 B1.5 Si1 Fe Rem.

HRc 45

PTA hardfacing of corrosion-resistant parts under mid-temperature and mid-pressure, such as stop-plate etc.
中溫中壓閥門的閘板及其他耐磨件的等離子噴焊

F322

Cr23 Ni13 Si5 B1

Fe Rem.

HRc 40

PTA hardfacing of corrosion-resistant parts under mid-temperature and mid-pressure, such as valve base etc.
中溫中壓閥門的閥座及其他耐磨件的等離子噴焊

F422

Sn10 P0.3 Cu Rem.

HB 80

PTA hardfacing of axle and bearing etc.
軸、軸承等離子噴焊