... we can work from size 20"-24" as hot expand pipe. Wall thickness can be max 100mm now.-,One new productionline ... for seamless Rectangular steel pipeCertificates:API ISO & KRMaterials:-,carbon steel pipe for liquid: ASTM A106/A53 GR.B, ST37, ST44 ... .-,alloy pipe: P110, A335-P12, A335-P11,12Cr1MoV, 15CrMo, 37Mn5, 30CrMnSi, 27SiMn.-, ...