Big cross main part of oil recovery well head

Big cross main part of oil recovery well head belongs to oil mining machines, forge take the neck on under the flange on the tip solid dress forge and take the neck lower flange, forge take the neck on, the lower flange adorn admittedly on the position department outside portion along the circumferencial direction differ 180 each adorn a clamp nipple joint admittedly, clamp nipple joint hole is taken on the neck with forging, lower flange hole intercommunication, the axial lead coincidence of two clamp nipple joints, and with forge take the neck on, the lower flange axial lead is perpendicular, forge take the neck on, be equipped with ring packing groove A on the terminal surface of lower flange respectively, be equipped with ring packing groove B respectively on the outer terminal surface of two clamp nipple joints, it is small in quantity that one's own boss's body group closes the part, and simple structure is reasonable, and the welding seam is few, and process simplifies, and intensity is big, and the le