Coated Sand Casting of Ductile Iron Pipe Valve Class Flange Pipe Corrosion Resistance of the Valve

Item

Description

Material

Technical Process

1

Ductile iron

castings

ASTM A 536-Gr.60-40-18,65-45-12,80-55-06,80-60-03;

DIN-GGG40,GGG50,GGG60,GGG70;

JIS-FCD40,FCD50,FCD60,FCD70;

BS-Gr370-17,Gr420-12,Gr500-7,Gr600-3,Gr700-2;

NF-FGS370-12,FGS400-12,FGS500-7,FGS600-3,FGS700-2;

Green-sand moulding

Resin-sand moulding

Lost foam cast

Shell-core cast

Electric-furnace smelting

2

Grey iron

castings

ASTM A48-No.20,25,30,35,40,45,50;

ASTM A126-Class A, Class B, Class C;

DIN-GG10,GG15,GG20,GG25,GG30,GG35;

JIS-FC10,FC15,FC20,FC25,FC30,FC35;

BS-Grade 150,180,220,260,300,350;

NF-FGL150,FGL200,FGL250,FGL300,FGL350;

Green-sand moulding

Resin-sand moulding

Lost foam cast

Shell-core cast

Electric-furnace smelting

3

Carbon steel

castings

ASTM A216-Gr. WCB, Gr. WCA, Gr. WCC;

ASTM-415-205, 450-240, 485-275, 80-40;

DIN- GS-C25(1.0619), GS-38(1.0416),

GS-45(1.0446), GS-52(1.0552), GS-60(1.0558);

JIS-SC410, SC450, SC480, SCC5;

BS-A1, A2, A5;

NF-GE230, GE280, GE320, GE370

Soluble glass sand moulding

Resin-sand moulding

Lost wax casting

(Investment casting)

Lost foam cast

Shell-core cast

Electric-furnace smelting

4

Stainless steel

castings

ASTM-CF-8M, CF-8, CA-15, CA-40, 316, 304;

DIN-G-X6CrNi18 9(1.4308), G-X7Cr13(1.4001)

G-X20Cr14(1.4027), 1.4408;

JIS-SCS13, SCS 1, SCS 2, SCS 14A;

BS-304C15, 410C21, 420C29, 316, 304;

NF-Z6CND18.12M, Z6CN18.10M, Z12C13M, Z20C13M

Soluble glass sand moulding

Resin-sand moulding

Lost wax casting

(Investment casting)

Electric-furnace smelting

5

Alloy steel

castings

DIN-GS-40Mn5(1.1168), GS-20Mn5(1.1120);

GS-37MnSi5(1.5122), GS-34CrMo4(1.7220);

JIS-SCMn3, SCW480, SCSiMn2, SCCrM3, SCMnCR3;

ASTM-LCC

UNS-J02505, J13048

NF-G20M6, G35CrMo4

Soluble glass sand moulding

Resin-sand moulding

Lost wax casting

(Investment casting)

Electric-furnace smelting