... standard and unstandard gratings.1). Standard grating:a.Bearing bar pitch: 50mm, 100mm.b.Cross bar pitch: 30mm, 40mm, 60mm. ... Power coated, Chromated and Electrolytic galvanising. Moriei Mechanical products(Dalian) Co., Ltd founded on December 22, 1985. We are one of the ... more than 20 years, enjoying an excellent reputation and keep a good relationship with many foreign companies, especially in Japan, ...