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.
Valve Parts Casting description
Material: low alloy steel (WC6)
Standard: ASTM A217M
Casting process: alkaline phenolic resins
Heat treatment method: NBK and tempering
Surface treatments: shot blasting and polishing
Tensile strength: 540MPa
Yield strength: 325MPa
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
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.