正大管件制造有限公司是專業生產、銷售管件的國內大型廠家之一；位于中國管件之鄉河北鹽山；擁有彎頭、法蘭、三通等管件生產線數條；可按客戶要求生產ISO、ANSI、JIS、DIN、GB、HG等標準的碳鋼、合金鋼、不銹鋼各種規格的彎頭、法蘭、異徑管、三通、管帽、大彎、承插等系列高中低壓工業管件1。5萬噸。我公司技術力量雄厚；擁有冷成型、熱擠型、機加型 、鍛打、鍛壓、熱處理等到先進工藝；多年來，堅持從選料、生產到售后服務，始終貫徹盡善盡美；精益求精；為電力、石化、化工、制藥、鍋爐、供熱等行業提供了優質服務；其產品直接出口到歐美、東南亞及中東地區深受用戶好評并長期合作至今。 

Yanshan Zhengda Pipe Fitting Manufacture Co,.Ltd is one of the specialized in the production and sales of large domestic manufacturers of pipe fittings, Located at the town of pipe fittings yanshan township,hebei province,china. With bend pipe fitting, flange pipe fitting, tee fittings production line several;Customers can request to produce ISO, ANSI, DIN, JIS, GB etc standard  of carbon steel, alloy steel, stainless steel various specifications of the bend pipe fitting, flange pipe fitting, different-diameter pipe, tee pipe fitting, pipe-cap, big bending and socket etc. Series high school low-pressure industrial fittings 1. 5 tons. My company technical force is abundant, Have cold forming, hot extruded, machine add type, forging, forging, heat treatment until the advanced technology, For many years, persisted from choosing materials, manufacturing and after-sales service, always implement the perfection; The perfection; For the electric power, petrochemical, chemical, pharmaceutical industry, boiler, heating industries provides quality service, Its products direct export to Europe and America, southeast Asia and Middle East praised by users and long-term cooperation today.