... swivel . 2.SS316 or SS304 1.We offer anchor chain connector anchor swivel ,double swivel ,swivel anchor, joint ,anchor swivel .swivel ... wax casting ,soluble glass process complex shell process.2. Materials: stainless steel ,carbon steel ,alloy steel, heat resistant steel ,tool steel ... -ray,metallograph.7. Quality control: According to ISO 9001 2001 Stainless Steel Anchor Swivel,anchor chain connector