LIST MANUFACTURE OF LSAW/SAW/ERW PIPE
WELSPUN India
LIST MANUFACTURE OF OCTG
US Steel
Baoshan Iron Steel
SEAH
JFE Nippon Steel
Tianjin Pipe Corporation
Wuxi Seamless PipeBaotau Steel
Zhejiang Jiang Li
Henyang Valin
Baoshan Steel & Iron Company
MAN Industry
Mittal Roman Steel
Hunting International
SCOMI-OMS
LIST MANUFACTURE OF DRILL PIPE
DPAL Soconord
