ቧንቧዎች
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አስትሜ A234 WPB & WPC ቧንቧዎች, የ thoWs ን, ጨካኝ
ይህ ዝርዝር የካርቦን ብረት ብረት አሠራር እና ሽፋኖች አሠራር የተሸከሙ እና የተገመገሙ ግንባታ ማገዶዎች ናቸው. እነዚህ መገጣጠሚያዎች በመጠነኛ እና ከፍ ያሉ የሙቀት መጠን ለአገልግሎት በገጽ ጭነት እና በውጥረት የመርከብ ጭነት ውስጥ ጥቅም ላይ ይውላሉ. The material for fittings shall consist of killed steel, forgings, bars, plates, seamless or fusion-welded tubular products with filler metal added. Forging or shaping operations may be performed by hammering, pressing, piercing, extruding, upsetting, rolling, bending, fusion welding, machining, or by a combination of two or more of these operations. የመረጃ አሰጣጥ ሂደት በመገጣጠሚያዎች ውስጥ መጥፎ አለፍጽምናዎችን አያፈራም. Fittings, after forming at an elevated temperature, shall be cooled to a temperature below the critical range under suitable conditions to prevent injurious defects caused by too rapid cooling, but in no case more rapidly than the cooling rate in still air. መገጣጠሚያው ለክፉ ፈተና, ለከባድ ምርመራ እና ለሃይድሮክቲክ ፈተና ይገዛል.