If you open this article after you see this title, This means that you may have encounteren such things. As an engineer of API 6A GATE VALVES, Maybe i can help you solve the confusion.
The same type of gate valve price can differ by 30%,40% or even more. Because the high efficiency or the low cost? As far as i know,not like that.The prices are almost transparent of Gate valve market in China at present. Of course, i don't deny that you can buy the looks good cargos with lower price .But you should know that the business man can't do business without profit. "THE BUYERS CAN NEVER BE MORE CUNNING THAN SELLERS。
Please find the following parts material list, this is the reason of the price difference.
Parts name, material and coating
You will get efficient and thoughtful service from Yulin Machinery.
1、Bearing Cap、Stem Adepter、Packing ， The material used is 1020 #, 45 #, 4130, the coating is QPQ.
2、Gasket、Seal Ring、Pin，The materials used are 1020 #, 304, 316.
3、Stem Packing、Seal Ring,The materials used are NBR, H-NBR, PTFE, PEEK.
The gate valve's price depends on the valve safety and sealing and parts materials and the service life. I hope this article can help you. Or any other comment will be highly appreciate.
For more api 6a wellhead equipmentinformation, please contact us. We will provide professional answers.