Amashubhu kabhayela anomfutho ophansi naphakathi enziwe ngezingothi noma amabhilidi aqinile anembobo ukuze akhe ishubhu le-burr, bese liyagoqwa elishisayo, eligoqekayo elibandayo noma elidayiwe ngokubanda.Ipayipi lensimbi elingenamthungo linesikhundla esibalulekile embonini yamapayipi ensimbi yaseChina.Ngokwezibalo ezingaphelele, amabhizinisi okukhiqiza amapayipi aseChina angenamthungo akhona angama-240 ngaphezulu, iyunithi yepayipi engenamthungo yensimbi engamasethi angama-250, umthamo wokukhiqiza wonyaka wamathani angaphezu kwezigidi ezi-4.5.Ngokombono we-caliber, <φ76, i-accounting ye-35%, <φ159-650, ibalwa ku-25%.Ngokuya ngezinhlobonhlobo, amathani ayizigidi ezingu-1.9 zamashubhu ahloswe ngokujwayelekile, alinganiselwa ku-54%;amathani angu-760,000 amashubhu e-petroleum, alinganiselwa ku-5.7%;amathani angu-150,000 ezinsika ze-hydraulic, amashubhu okunemba, okubalelwa ku-4.3%;amashubhu angenalutho, amashubhu athwalayo, amashubhu ezimoto ingqikithi yamathani angama-50,000, okubalelwa ku-1.4%.
Izici zemishini yeshubhu le-boiler enengcindezi ephansi namaphakathi: amandla aqinile σb (MPa): ≥ 410 (42) amandla esivuno σs (MPa): ≥ 245 (25) ubude δ5 (%): ≥ 25 isigaba sokushwabana ψ (%): ≥ 5 , ubulukhuni: hhayi ukwelashwa kokushisa, ≤ 156HB, usayizi wesampula: usayizi wesampula 25mm ukucaciswa kokwelashwa kokushisa kanye nenhlangano ye-metallographic: imininingwane yokwelashwa kokushisa: okujwayelekile, 910 ℃, Ukupholisa komoya.Inhlangano ye-Metallographic: ferrite + pearlite.
Izinga lokukhishwa kweshubhu le-boiler elinengcindezi emaphakathi nephansi: Ishubhu yensimbi engenamthungo engu-GB3087-1999 kubhayela wengcindezi ephansi naphakathi.
Amashubhu kabhayela anomfutho ophakathi nendawo namashubhu ashisayo agoqekayo futhi abandayo adonswe (agoqiwe) angenamthungo ensimbi yekhwalithi ephezulu ye-carbon structural asetshenziselwa ukwenza amashubhu esitimu esishisa kakhulu, amashubhu amanzi agingqikayo namashubhu esimusi esishisa kakhulu samabhoyela esitimela, amashubhu amakhulu entuthu, amashubhu amancane entuthu kanye ne-arch. izitini zezitini zezakhiwo ezihlukahlukene zama-boilers aphansi naphakathi.Ikakhulukazi isetshenziselwa ama-boilers ezimboni kanye nama-boilers aphilayo ukuthutha amapayipi amanzi anomfutho ophansi naphakathi.Izinto ezimele ziyi-10 ne-20 gauge steel.