高壓直管 

　　高壓直管用優質合金鋼制造，端部為由王連接，高壓直管規格有2“,3”和4“,冷工作壓力為42MPa到105MPa（60o0ps-15000ps），高壓直管有普通整體式高壓直管，帶擋肩的整體式高壓直管，分體式高壓直管，長度根據客戶需求。
　　The high-pressure straight pipe is made of high- quality alloy steel and the end is connected by the union Its specifications have 2, 3” and 4“and cold working pressure is 42MPA to 105MPA（6000psi-15000psi）The high-pressure straight pipe includes ordinary integral type, integral type with shoulders and split type high-pressure straight pipes. The length depends on the demand of clients.

　　二、高壓直管結構
　　llStructure of high-pressure straight pipe
　　整體式帶擋肩的高壓直管
　　Integral high-pressure straight pipe with shoulders
　　普通整體式高壓直管因結構簡單，使用方便，在國內普遍使用。
　　The ordinary integral high-pressure straight pipe is widely used in the country because of its simple structure and convenient use
　　整體式高壓直管技術數據見如下表格
　　Technical data of integral high-pressure straight pipe are shown in the following table

　　表格中藍色區域為對應長度的重量，僅供參考。
　　The blue area in the table is the weight of the corresponding length and for reference purposes only
　　分體式高壓直管在美國或者習慣使用美國產品的國家很受歡迎。
　　split-type high-pressure straight pipe is popular in the United States or countries that habitually use American roducts
　　分體式高壓直管技術數據
　　Technical data of split-type high-pressure straight pipe

　　整體式帶擋肩高壓直管在整體式帶擋肩高壓直管在安裝三瓜螺母的一頭，專門ⅰ設計了擋肩，見上圖的左端，可以使得高壓直管在垂直使用時，三瓜螺母不會掉下或者下滑，保證使用更安全，目前整體式帶擋肩高壓直管越來越得以推廣使用。
　　Integral high-pressure straight pipe with shoulders is installed at one end of the three-jaw nut. Specially designed shoulder （see the left end of the picture above）， can make the three-jaw nut not fall off or slide down to ensure its use safer. At present, integral high-pressure straight pipe with shoulders are becoming more and more widely used