ASTM A252 GR.3 Structural LSAW(JCOE) Carbon Steel Pipe Chithunzi Chowonetsedwa

ASTM A252 GR.3 Structural LSAW(JCOE) Chitoliro Chachitsulo cha Carbon

Kufotokozera Kwachidule:

Gulu:GR.1,GR.2,GR.3

Kukula: OD: 406 ~ 1500mm WT: 8 ~ 50mm

Malipiro: 30% Deposit, 70% L/C Kapena B/L Copy Kapena 100% L/C Pamaso

Kutha Kwazinthu: Kupitilira matani 100000 kuti apangidwe pachaka

Nthawi Yotsogola: Masiku a 7-14 Ngati Muli Sitolo, Masiku 30-45 Opanga

Kupaka Pamwamba: Bare/Black Varnish/3LPE/Magalvanized/Malingana ndi pempho la kasitomala.

Mapeto: Pang'onopang'ono / Beveled Mapeto

Chitetezo Chomaliza: Chipewa cha pulasitiki kapena Iron Protector

Titumizireni imelo Whatsapp Foni

Tsatanetsatane wa Zamalonda

Zogwirizana nazo

Zolemba Zamalonda

Kufotokozera Kwazinthu zaChitoliro chachitsulo cha LSAW:

Mtundu	Zaukadaulo	Zakuthupi	Standard	Gulu
Longitudinal Submerged-arc Welded Pipe	SAW	Chitsulo cha Carbon	API 5L PSL1&PSL2	GR.B,X42,X46,X52,X60,X65,X70,ndi zina
			ASTM A252	GR.1,GR.2, GR.3
			Chithunzi cha EN10210	S275JRH,S275J0H,S355J0H,S355J2H, etc.
			Chithunzi cha EN10219	S275JRH,S275J0H,S355J0H,S355J2H, etc.

Kupanga Njira yaChitoliro chachitsulo cha ASTM A252 LSAW:

Longitudinal Submerged-arc Welded (LSAW) Pipe imagwiritsa ntchito ukadaulo wowotcherera wa arc pansi pamadzi, pogwiritsa ntchito kuwotcherera kwa filler, chitetezo cha tinthu chokwiriridwa arc.

LSAW ndiye chidule cha Chingerezi cha chitoliro chachitsulo chomizidwa pansi pamadzi.Kapangidwe ka mipiringidzo yazitsulo yomizidwa ndi arc yowotcherera yowongoka yachitsulo imaphatikizapo ukadaulo wopanga JCOE, ukadaulo wopangira ma arc wothira pansi ndi ukadaulo wopanga UOE.

Njira yopangira Pipe ya Longitudinal Submerged-arc Welded(LSAW) ili motere:

Akupanga mbale kufufuza → m'mphepete mphero → chisanadze kupinda → kupanga → Pre-kuwotcherera → kuwotcherera mkati → kuwotcherera kunja → Akupanga kuyendera → X-ray anayendera → Kukulitsa → hydraulic mayeso →l.Chamfering → Akupanga kuyendera → X-ray anayendera → maginito tinthu anayendera pa chubu mapeto

Chemical Composition:

Chitsulo sichiyenera kukhala ndi phosphorous yoposa 0.050%.

Zofunikira za Tensile

Zofunikira za Tensile
	Gulu 1	Gulu 2	Gulu 3
Mphamvu zolimba, min, psi (MPa)	50 000 (345)	60 000 (415)	66 000 (455)
Zokolola kapena mphamvu zokolola, min, psi(MPa)	30 000 (205)	35 000 (240)	45 000 (310)
Kutalikitsa kocheperako kwa makulidwe a khoma %6 mu. (7.9 mm) kapena kupitilira apo: Elongation mu 8 in. (203.2 mm), min, % Elongation mu 2 in. (50.8 mm), min,%	18 30	14 25	... 20
Pakuti makulidwe mwadzina khoma zosakwana % 6 mu (7.9 mm), kuchotsera ku mfundo osachepera elongation mu 2 mu (50,08 mm) aliyense Vzi - mu. (0,8 mm) kuchepa mwadzina khoma makulidwe m'munsimu %6 mu. (7.9 mm), mu maperesenti	1.5A	1.25A	1.0A...

Mayeso a Mechanical ndi NDT aChitoliro chachitsulo cha ASTM A252 LSAW:

Kuyesa kwa NDT (RT).

Kuyeza kwa Hydrostatic

Kuyesa Kwamakina

Kupindika Mayeso-utali wokwanira wa chitoliro uyenera kuyima kukhala wopindika kupyola 90 ° kuzungulira cylindrical mandrel.

Mayeso a Flattening -ngakhale kuyezetsa sikofunikira, chitolirocho chizitha kukwaniritsa zofunikira zoyeserera.

Kuyesa kwa Hydrostatic-Kupatula ngati kuloledwa, kutalika kwa chitoliro chilichonse kudzayesedwa ndi hydro-static popanda kutayikira kudzera pakhoma la chitoliro.

Kuyesa kwamagetsi kosawononga-monga m'malo mwa kuyesa kwa hydro-static, thupi lonse la chitoliro chilichonse lidzayesedwa ndi mayeso osawononga magetsi.kumene kuyesedwa kosawonongeka kwa magetsi kumachitidwa, kutalika kwake kudzalembedwa ndi zilembo "NDE"

Kuyeza kwa ultrasonic

Kufufuza kwamakono kwa eddy

Kugwiritsa ntchito kwaChitoliro chachitsulo cha ASTM A252 LSAW:

Chitoliro cholamulidwa pansi pa ndondomekoyi ndi cha milu ya chitoliro momwe silinda yachitsulo imakhala ngati membala wonyamula katundu wokhazikika, kapena ngati chipolopolo chopanga milu ya konkriti.

Mtengo Wotsika ASTM ndi Mulu wa Chitoliro cha 252

Kulekerera kwa awiri akunja, makulidwe a khoma, kutalika ndi kulemera kwake:

Kunja Diameter	Kutalika kwa kunja kwa milu ya chitoliro sikuyenera kusiyana kuposa ± 1% kuchokera m'mimba mwake yomwe yatchulidwa.
Khoma makulidwe	Makulidwe a khoma nthawi iliyonse siyenera kupitirira 12.5% pansi pa makulidwe odziwika a khoma.
Utali	Milu ya mapaipi iyenera kuperekedwa motalika mwachisawawa, kutalika kwachisawawa kawiri, kapena muutali wofanana monga momwe zafotokozedwera mu dongosolo logulira, molingana ndi malire awa:	Kutalika kwachisawawa kamodzi	16 mpaka 25ft (4.88 mpaka 7.62mm), inchi
		Utali wowirikiza kawiri	Kupitilira 25ft (7.62m) yokhala ndi pafupifupi 35ft (10.67m)
		Utali wofanana	kutalika monga momwe zafotokozedwera ndi kusintha kovomerezeka kwa ±1 mkati.
Kulemera	Utali uliwonse wa mulu wa chitoliro uyenera kuyezedwa padera ndipo kulemera kwake sikuyenera kusiyana kuposa 15% kuposa kapena 5% pansi pa kulemera kwake, kuwerengeredwa pogwiritsa ntchito kutalika kwake ndi kulemera kwake pa kutalika kwake.