ASTM Standard 90 Degree Fittings Galvanizated Malleable Elbow With Rib

How about white cast iron ?

White cast iron is converted to malleable cast iron by a two stage heat treatment process to a condition having most of its carbon content in the form of irregularly shaped nodules of graphite, called temper carbon. The structure of malleable cast iron consists of ferrite, pearlite and tempered carbon as compared to the fracture inducing lamellar structure of gray cast iron.​

Visual communication of ASTM standard Elbow

Summary of ASTM standard Elbow With Rib

• In order to ensure mechanical property, control the temperature of and time strictly during annealing.
  
• In order to improve material physical characteristics of ASTM standard Elbow ,we set a higher heating value gas furnace to control the annealing process strictly .
  

• To make sure the long time using life ,it is necessary to keep good toughness .
  

• Smooth surface ,no sand hole .
  

• Control the zinc layer stricly according to requirements of standard .

25 Years Experience
Leyon steel also known as “China malleable”. For these 25 years, Leyon is always focusing on research and development of malleable iron fittings, grooved fittings, grooved couplings, tubing and valves that are mainly applied in such industries as fire protection, water supply, construction industry, municipal engineering and petrochemical.

Currently, Leyon is one of the largest pipe fittings manufacturers in the world, and is dedicated to provide secure, reliable and cost effective pipe fittings, with large products capacity, superior quality, strong R&D strength and first class service.

Our main production facilities include Sinto automatic molding line, automatic molding sand mixers from Germany, cupola furnaces, electric furnaces and more.

Leyon is also ISO 9001:2008-, BSI-, CCC-, UL- and FM-certified, furthermore, we were named as the Shanxi Famous brand.

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