We provide series of high pressure integral fittings and welded fittings, including Wyes, Elbows, Tees, Crosses, Laterals and Fishtails, with sizes ranging from 2" to 4"and pressures from 3000psi to 20000psi(21MPa to 140MPa). The integral connections made of high strength alloy steel are all heat-treated to enhance load-bearing capacity and lengthen service life. They may have union ends for easy connection with various cementing or fracturing equipment, or have a welded end connector which is designed as per API Spec 6A.