... have more than 15 years experience about making double ball valve moulds.union ball valve has seven parts.We can make all kinds of ... , PE, PE-RT, POM and other material. Form as thread, socket, male, female, etc.4. We can provide moulds various pipe ... designs.7. Small order accepted.standard: BS, ANSI, DIN, JIS, socket, thread, order, quality, size, color, package, weigh, fast, long, excellent ...