Traitements thermiques de tube rectangulaire acier, la GTM France We are specialized in heat treatment of carbon and alloyed steel bars and tubes. Our knowledge is based on more than 25 years of experience and research. La GTM - France is THE specialist in heat trea Implantée à Denain dans le Nord de la France, l'entreprise occupe 70 000 m² dont 13000 m² couverts et 4 000m² stockage extérieur. 1 portique et ...