... 3.Good resistance to high and low temperatures 4.part name:compression springs Specification 1) Many kinds ... 60Si2MnA, 177PH, X750,X718,65Mn,50CrV4 3)part name: 177PH valve springs Terms and conditions Sample ... confirming our price, we prepare the first article 4.After confirming our sample, you place an order ... .Outside of diameter (O.D) 3.Free height 4.Active coil Number (Na) 5.material, quantity 6 ...