... Welding Pipes, Available in Customized Packagings Key Specifications/Special Features: Reference standard: GB/T1838-95, GB2520-88, JIS G3303-1997 and DIN ... Width available: 1000 to 1250mm Coil diameter: Inside diameter: 508mm (standard) Outside diameter: Normally 1, 000 to 1, 250mm Easy open ...