Sachiya Steel International manufactures and exports Duplex Steel S31803 Buttweld Fittings to international quality standards using high-grade steel. Duplex Steel S31803 Elbow Butt Weld Pipe Fittings is stainless steel for improved resistance to pitting, high strength, stress corrosion, crevice corrosion, and cracking. Duplex Steel S32205 Tee Butt Weld Pipe Fittings is often used