Odatda po'latdan yasalgan baholar va ularning qo'llaniladigan stsenariylari?
Q235b past bosimli suyuqlik tashish uchun ishlatiladi, L245 (API 5L) neft va gaz quvurlari uchun qo'llaniladi. (-40℃impact test) need to be considered when selecting.
To'g'ri tik chayqalayotgan quvurlarning mexanik xususiyatlarini qanday sinab ko'rish mumkin?
TENDILE TEST TARTIBI BILDIY IShTIRISh TARTIBI BILDIY TARTIBI VA SUV TARTIBI BILDIY TEKShIRIShNI O'ZGARTIRISh VA SUV BILAN TEST ASOSIY BOShQARUV (Odatda 1 . ish bosimini tekshiradi.
Nima uchun uglerod ekvivalenti (CEQ) muhim?
Cext{eq}=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15, and high values (such as>=0.43) increase the risk of welding cracks. Controlling Ceq can ensure weldability, especially thick-walled Quvurlar sovutish stavkasini sekinlashtirish uchun oldindan qizdirilishi kerak (masalan, 150 daraja).
Korroziyaga qarshi paltolarning qaysi turlari bor?
3PE (polyethylene) is used for buried pipes, FBE (epoxy powder) is resistant to high temperatures, and the galvanized layer is resistant to atmospheric corrosion. The coating selection needs to consider the soil resistivity (such as 3PE for >50 dẖdo) va qurilish harorati (FBE) . {}}
Cheling zonasining qattiqligini qanday yaxshilash mumkin?
Ni va Mo kabi payvandlashning qoldiqlarini (masalan, 20-30} . ni qo'llab-quvvatlash uchun donalarni tozalash (masalan, 20-30} kabi qoldiqni (normallashtirish) vositalaridan foydalanish uchun boshqariladigan va boshqariladigan sovutish jarayonini qo'llang.
