The barrel is main parts of subsurface sucker rod pump, it has two type of heavy wall thickness and thin wall thickness.

The B1 pump barrel ordered by our company's customer has recently completed production. B1 pump barrel is nitriding pump barrel, which is different from A1 pump barrel in production process and hardening mode. The specifications purchased by the customer this time are, B12 150-20, B12 125-20, B12 15