he shape and size of carbon steel flanges is accurate with small machining volume&lower cost. The carbon content of ordinary carbon steel flange is lower he shape and size of carbon steel flanges is accurate with small machining volume&lower cost. The carbon content of ordinary carbon steel flange is lower he shape and size of carbon steel flanges is accurate with small machining volume&lower cost. The carbon content of ordinary carbon steel flange is lower he shape and size of carbon steel flanges is accurate with small machining volume&lower cost. The carbon content of ordinary carbon steel flange is lower he shape and size of carbon steel flanges is accurate with small machining volume&lower cost. The carbon content of ordinary carbon steel flange is lower

he shape and size of carbon steel flanges is accurate with small machining volume&lower cost. The carbon content of ordinary carbon steel flange is lower he shape and size of carbon steel flanges is accurate with small machining volume&lower cost. The carbon content of ordinary carbon steel flange is lower he shape and size of carbon steel flanges is accurate with small machining volume&lower cost. The carbon content of ordinary carbon steel flange is lower he shape and size of carbon steel flanges is accurate with small machining volume&lower cost. The carbon content of ordinary carbon steel flange is lower he shape and size of carbon steel flanges is accurate with small machining volume&lower cost. The carbon content of ordinary carbon steel flange is lower