Valve Parts Casting butterfly valve Cast stainless steel

Butterfly valve Cast stainless steel nearly 15 years,We have exported Stertil(Holland), LKL(Holland), GE(USA), CAT(USA), RHI(USA), WKM(Japan), UGL(Australia), ABS(Australia), KTH(Australia), Supplylink(Australia), FLOWSERVE(USA), Ruhrpumpen,etc.

Product Details

Valve Parts Casting description 

Material: low alloy steel (WC6)

Standard: ASTM A217M

Casting process:  alkaline phenolic resins

Weight: 650KGS

Nominal pressure:PN2.5~PN25

Heat treatment method: NBK and tempering

Surface treatments:  shot blasting and polishing

Chemical Composition:








 Mechanical property:

Tensile strength: 540MPa

Yield strength: 325MPa

Elongation: 25%

Reduction of area:44%

Tolerance grade: CT10

Application: pump, valve, impeller, power facilities, Construction Tools, Oil and gas system, Agriculture Machinery, Firefighting Equipment, Metallurgical Equipment, Shipyard, mining equipment parts.

Technical key points

Ø In order to get a better slagging effect, set larger risers and increase pouring temperature appropriately. In normal situation, WCB carbon steel at 1570 ℃ -1580 ℃, stainless steel at 1580 ℃ -1590 ℃.

Ø  pouring speed: in the case of ensuring smooth gas discharge from the cavity, higher pouring speed can be used;pouring operation requirements: after casting, as soon as the castings solidified, remove the pressure iron and box, to reduce the casting shrinkage resistance and avoid cracks and flaws.



Ø Strict contract auditing invloved all departments to assure the feasibility of each order.

Ø Process design and validation before bulk production.

Ø Strictly control on all raw and auxiliary materials, All raw materials reach the world advanced level.

Ø On-site inspection to all processes, inspection record keep traceable for 3 years.

Ø All inspectors are skilled with international certificates.

Ø Qualified WPS and professional welders guarantee welding quality.

Ø 100% inspection of finished sprouts before shipment.

Ø Advanced and complete testing and inspection equipment: NDT, metal Microscope, impact tester, hardness tester...

Ø Regular training for inspection staff



Ø We provide free technical service about casting parts and application issues.

Ø Free on-site touring and introduction of our factory

Ø We provide process design and validation for free

Ø We can guarantee on-time delivery of samples and goods

Ø Close follow-up of all orders by special person and keep customers informed timely

Ø All after-sale request will be responded in 24 hours

 our service.jpg


1. What is the delivery time of pattern, casting parts and machining finished parts?

  A: In general, pattern making time is 20-40 days base on the design of the parts, sample making time is 20-30 days, machining finished parts lead time is 40-60 days. The lead time will vary base one different design and weight of the parts, please contact us for details.

2. What’s the minimum wall thickness of the castings you produce?

  A: The minimum wall thickness of the castings we produce is 8mm.

3. Which kinds of NDT methods that your company can provide?

  A: The NDT we provide are PT, MT, UT and RT.

4. Which welding equipment do you have?

  A: We mainly use SMAW, MAG, TIG, CW according to the material and characteristic of the casting

5. What equipment does your company use when you examine the chemical composition?

  A: We use Spark Spectrometer, testing result are printed automatically

6. What equipment do you have for NDT inspection?

  A: We have ultrasonic flaw detector, av miniature magnetic yoke detector, magnetic detector and penetration detector.