... 12 years OEM producing experience 4.ISO9001,ISO14001 types of pump coupling,grooved fitting,types of pipe joints 1:Basic ... municipal constructions like water supplying ,gas supplying, heat supplying,etc2)Industrial pipeline system on shipping ,mine, oil field,textile,powder plant ... program 5:Practical figure: 6:certificates obtained: types of pump coupling,grooved fitting,types of pipe joints