Welcome to Lianfa Stainless Steel Pipes and Valves (QingYun) Co Ltd
PRODUCT CENTER
It is a casting and forging enterprise integrating Silica Sol precision casting, hot die forging and CNC finishing
ABOUT US
Lianfa Stainless Steel Pipes and Valves (QingYun) Co Ltd
Specialises in the manufacture of stainless steel pipe fittings, ball valves, sanitary fittings and valves, quick couplings, flexible fittings, flanges and carbon steel valves and associated items. Lianfa has three production lines, dedicated to precision investment casting, three machining shops and three lines for mold forging.
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BUSINESS ADVANTAGE
FOCUS ON THE VALVE INDUSTRY FOR 23 YEARS
INDUSTRY USES
OUR ADVANCED TECHNOLOGY
OUR SERVICE AIM
WE HAVE ADVANCED PRODUCTION LINES
SOME OF THE WORLD'S TOP 500 COMPANIES CHOOSE US
NEWS CENTER
We believe that the business relationships we have with our customers, should be mutually beneficial.
02-21
2022
Introduction and advantages of stainless steel
Stainless Steel (Stainless Steel) is defined in GB/T20878-2007 as a steel with stainless steel and corrosion resistance as its main characteristics, with a chromium content of at least 10.5% and a carbon content of no more than 1.2%. Stainless steel is the abbreviation of stainless and acid-resistant steel. The steel that is resistant to weak corrosive media such as air, steam and water or has stainless steel is called stainless steel; Corroded steel is called acid-resistant steel.
02-21
2022
As the world’s largest offshore oil services tradeshow, the Offshore Technology Conference (OTC) typically attracts 50,000 energy professionals from 110 countries. Boasting more than one-half million square feet of exhibition area, with 2,500 companies from more than 35 countries in an area the size of 13 football fields. OTC ranks among the largest 200 trade shows held annually in the United States and is among the 10 largest meetings in terms of attendance.
02-21
2022
Common causes of leaks in flanges
Common causes of leaks in flanges: The wrong mouth, the wrong mouth is that the pipe and the flange are straight, but the two flanges are not the same, so that the bolts around can not enter the bolt hole leisurely. Some will use reaming or use small bolts, but this will reduce the tension of the flange.
02-21
2022
Stainless steel American standard butt welding flange year-round spot
Connect the pipeline and maintain a good sealing performance of the pipeline; if there is a problem with a certain pipeline, it is convenient to replace a certain pipeline; the welding flange has certain technical requirements and technical parameters in production and use, the ring The butt welds shall be post-weld heat treated and subjected to 100% ray or ultrasonic flaw detection, and the radiographic inspection conforms to the Class II requirements of JB4730, and the ultrasonic flaw detection meets the Class I requirements of JB4730.
Our company philosophy, is to produce superior quality products, at competitive prices backed up exceptional service and prompt delivery.
We believe that the business relationships we have with our customers, should be mutually beneficial.
(86-0534) 3326577 
sale@lianfachina.com 