Pipeline System is a professional manufacturer of ASTM A234 Reducing Elbows and supply high quality ASTM A234 Reducing Elbows in both large and small quantities worldwide & offer you the best prices in the market. Standard: ANSI B16.9 / 16.28, ASTM A53/A106, API 5L, ASME B36.10M—1996, DIN2605 / 2615 / 2616, JIS P2311/2312 Thickness: SGP,