Material: Stainless steel (1.4581)
Standard: DIN EN 10213
Casting process: alkaline phenolic resins
Min. wall thickness: 7mm
Heat treatment method: solid solution
Surface treatments: shot blasting and polishing
Tensile strength: 610MPa
Yield strength: 355MPa
Tolerance grade: CT11
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 Valve body is with simple structure, but require high pressure resistance, process demand is very strict; usually need to set pouring system in horizontal mould joints, in order to achieve sequential solidification and ensure effective complement from top to bottom .
Ø Open type internal runner can increase the effective cross-sectional area, ensure fast and smooth filling, reduce the temperature gradient, effectively slagging and improve riser feeding effect.
Ø Structural characteristics of the valve body castings make it easy to generate shrinkage and slag (sand) defects at the bottom, which seriously affect the pressure resistance of the castings, and may cause leakage of the media matter(water, gas, oil, etc.) during application.when setting feeding riser, feeding gate must be set or extended, if necessary, extend the feeding runner to the bottom of the casting.
Ø We are a innovation-driven company, we have five patents and another 13 patents will be expected to get in short months.
Ø we are willing to develop all new material only if it’s required in application.
Ø Advantage technology in composition control, especially super low carton steel, stainless steel and duplex stainless steel.
Ø We cast very good surface of thin-wall castings, which is normally not easy to control for sand castings, but we made suitable technology and are able to guarantee smooth no-defect surface.
Ø Crack is fatal flaw for pressure resistant container. We can make sure no crack inside and outside of the pump and valve castings, and a good pressure-resistant performance.
Ø All our technology innovation only for one aim--- the best quality, even that means a higher cost and lower production rate.
2003 Wuxi Lingtong Casting Co.,Ltd. Founded, with main products of sodium silicate silica sand precision casting and sand casting.
2005 Lingtong started to cooperate with LKL located in Netherlands, our products entered EU market.
2008 start to supply castings to WKM in China.
2009 start cooperating with stertil B.V. who is famous lifting equipment manufacturer in Netherlands, we provide the lifting parts.
2010 we purchased 500kg and 750kg medium frequency furnaces to expand our capacity. In the same year, our products was audited by Flowserve Flow Control Co.,Ltd, and began to cooperate formally.
2012.3 our company has passed the ISO quality system registration, and has obtained ISO 9001:2008 certificate.
2014 our factory moved to industrial park of Mashan in Wuxi Binhui District, in addition, we added 1.5 tons and 2 tons of medium frequency electric furnace, as well as sand mixer and phenolic resin regeneration system. Formally start bulk production production of cast steel, especially production of stainless steel, carbon steel and duplex stainless steel.
2015.4 our samples provided to Wuxi Hitachi Pump Co., LTD get approval, and start cooperation with them.
2015.6 butterfly valve body produced by Lingtong won the 2015 CIFEX "gold award for for quality casting" , with material WCB.
2016.6 We Cooperated with Wuxi Xi Pump Manufacture co., LTD. and provide the hydroelectric equipment parts.
2016.10 Established a cooperative relationship with Shanghai Liancheng pump industry Co., LTD.
2017.1 get passed documents and on-site auditing from RUHRPUMPEN (China) Co., LTD and start cooperation.
2017.6 our vertical pump body casting won the award of "Special gold award for quality casting" in 2017 CIFEX. material is CF3M (316L stainless steel), the pump body was exported to the United States.
1. Can you provide machined finished parts?
A: Yes, we have our own machining center, we have machines for different machining process and CNC machining center.
2. What kinds of physical and chemical testing you can provide?
A: The physical and chemical testing we provide include:
Ø chemical composition testing
Ø physical property testing：hardness test，Tensile performance testing, room temperature impact testing, low temperature impact test
Ø NDT: PT, MT, UT &RT
Ø Metallographic testing
3. Can you list the smelting equipment of your company?
A: We have 3 models of medium-frequency induction furnaces: 0.5 tons, 2 tons and 3 tons
4. Can you guarantee the traceability of your products?
A: Regular products: On-site inspection record and FG Test report will be kept more than 3 years
Important products：On-site inspection record and FG Test report will be kept more than 5 years , applying processing card system, and make sure one card for each piece, thus to keep each piece of products are traceable.
5. What’s your annual production capacity?
A: We cast more then 1500 tons of all kinds steel castings annually.
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.