Product Description:Spring Cushion Housing/ Block SeatApplication: BPW trailer Single Point Suspension partsMaterial:QT450 ductile iron castingTruck Axle Bearing Housingspring housing for various of truck Trailer Singe Point suspension partsISO/TS16949: 2002 Competitive price our advantage:1) Original material standard according to the original OEM technical drawing2) Premium quality standard guaranteed3) Long lasting and reliable working life time4) Positive customer feedback from abroad and domestic market5) Long exporting history to many counties in the world6) Competitive and reasonable price7) Able to develop & produce according to your specification with technical drawing8) Unique Packing according to customer specification requirementWe can do many other trailer parts, Axle nut, brake drum, Container twist locks, bogie axle, Bogie bracket welding assembly, spring cushion housing, central rotating seat, turnnion block/seat, spring plate, king pin nut/jasser nut, Grease cap/hub cap, spring saddle bush, wheel hub etc.