TIANJIN YOUFA STEEL PEEL GROUP LTD.
An kafa ƙungiyar bututun ƙarfe ta Tianjin Youfa a ranar 1 ga Yuli, 2000, kuma hedikwatar ta kasance a mafi girman cibiyar samar da bututun walda a China-Kauyen Daqiuzhuang, birnin Tianjin, wanda babban kamfani ne na kera bututun ƙarfe wanda ke samar da nau'ikan kayayyakin bututu iri-iri.Bututun ƙarfe mai galvanized,ERW STEE LPIPE,BUTU MAI RUKUNI DA KARFE, Bututun murabba'i mai galvanized,Bututun Karfe Karfe,Bututun Bakin Karfe,SCAFFOLDING, DAKayan Bututuan sanya su a cikin manyan kamfanoni 500 na kasar Sin a cikin wannan masana'antar, kuma a cikin manyan kamfanoni 500 na kasar Sin.
Ofishin alamar kasuwanci na SAIC ya tabbatar da kamfanin Youfa a matsayin kamfanin da ya shahara a China a watan Maris na 2008.
Gabatarwa Takaitaccen Bayani Kan Bututun Karfe na ASTM A53:
| Samfuri | ASTM A53 Carbon Karfe bututu |
| Kayan Aiki | Karfe Mai Kauri |
| Matsayi | A53 A Grade A = Q195 / S195 A53 Darasi na B =Q235 / S235 |
| Daidaitacce | ASTM A53, ASTM A500, A36, ASTM A795GB/T3091, GB/T13793 |
ASTM A53 tsari ne na musamman don bututun ƙarfe mai launin baƙi da aka tsoma a cikin ruwan zafi wanda ba shi da matsala da walda. Ana amfani da bututun ƙarfe na ASTM A53 na carbon a masana'antu da wuraren gini don isar da iskar gas, ruwa, mai, da sauran ruwa.
Aikace-aikacen bututun ƙarfe na ASTM A53 Carbon:
Gine-gine / kayan gini bututun ƙarfe
Bututun ƙarfe mai shinge
Kariyar wuta bututun ƙarfe
Bututun ƙarfe na greenhouse
Ruwa mai ƙarancin matsin lamba, ruwa, iskar gas, mai, bututun layi
Bututun ban ruwa
Bututun hannu
Nau'ikan bututun ƙarfe na ASTM A53:
Fasaha: An haɗa ERW ko kuma ba shi da sumul
Rufin zinc: matsakaicin 30um (220g/m2) da kuma rufin zinc na musamman har zuwa 80um.
Ƙarshen Bututu: Ba a ɓoye ba, ko kuma an yi masa lanƙwasa, ko kuma an yi masa zare.

Fasaha: An haɗa ERW
Fuskar ƙasa: Baƙi na halitta; ko an ɗan shafa mai kaɗan; ko fenti mai launi
Ƙarshen Bututu: Lakabi ko Ba a Sananne ba
Fasaha: An yi walda da SAW
Fuskar: Baƙi na halitta; ko kuma wanda aka yi da galvanized; ko 3PE FBE
Ƙarshen Bututu: Ƙarshen da aka yanke
Fasaha: An yi birgima da zafi ba tare da matsala ba
Fuskar ƙasa: Baƙi na halitta; ko Baƙi fenti; ko 3PE FBE; ko Galvanized
Ƙarshen Bututu: Ƙarshen da aka sassaka ko kuma waɗanda aka sassaka
Jadawalin Girman Bututun Karfe na ASTM Standard:
| DN | OD | ASTM A53 / API 5L / ASTM A795 | |||
| SCH10S | STD SCH40 | SCH80 | |||
| MM | INCI | MM | MM | MM | |
| 15 | 21.3 | 1/2" | 2.11 | 2.77 | 3.73 |
| 20 | 26.7 | 3/4" | 2.11 | 2.87 | 3.91 |
| 25 | 33.4 | 1" | 2.77 | 3.38 | 4.55 |
| 32 | 42.2 | 1-1/4" | 2.77 | 3.56 | 4.85 |
| 40 | 48.3 | 1-1/2" | 2.77 | 3.68 | 5.08 |
| 50 | 60.3 | 2" | 2.77 | 3.91 | 5.54 |
| 65 | 73 | 2-1/2" | 3.05 | 5.16 | 7.01 |
| 80 | 88.9 | 3" | 3.05 | 5.49 | 7.62 |
| 90 | 101.6 | 3-1/2" | 3.05 | 5.74 | 8.08 |
| 100 | 114.3 | 4" | 3.05 | 6.02 | 8.56 |
| 125 | 141.3 | 5" | 3.4 | 6.55 | 9.53 |
| 150 | 168.3 | 6" | 3.4 | 7.11 | 10.97 |
| 200 | 219.1 | 8" | 3.76 | 8.18 | 12.7 |
| 250 | 273.1 | 10" | 4.19 | 9.27 | 15.09 |
Maganin Karfe na ASTM A53 na ASTM A53:
*ƘARSHEN BIYU DA AKA ZARE (BS ko ASTM standard)Ƙarshe ɗaya da murfin filastik, ɗayan kuma da haɗin kai;
*ƘARSHEN GINSHI;
*ƘARSHEN KARSHE (yanayin da ake ciki na yau da kullun);
*ƘARSHEN BEVEL DA MURFIN ROBA (bevel mai digiri 30 wanda ya dace da walda) ko kuma ba tare da murfi ba.
Takaddun Shaida da Ingancin Inganci na Youfa Carbon Steel Bututun:
1) A lokacin da kuma bayan samarwa, ma'aikatan QC guda 4 waɗanda suka yi fiye da shekaru 5 suna duba samfura bazuwar.
2) Dakin gwaje-gwaje na ƙasa mai lasisi tare da takaddun shaida na CNAS
3) Dubawa mai karɓuwa daga wani ɓangare na uku da mai siye ya naɗa/ya biya, kamar SGS, BV.
4) Malesiya, Indonesia, Singapore, Philippines, Ostiraliya, Peru da Burtaniya sun amince da su. Muna da takaddun shaida na UL /FM, ISO9001/18001, FPC, CE.
Isarwa da Bututun Karfe na Carbon: -- Bututun sashe mai zagaye mai rami
1. OD 219mm da ƙasa A cikin fakitin ruwa masu girman hexagonal waɗanda aka cika da sandunan ƙarfe, Tare da majajjawa na nailan guda biyu ga kowane fakiti
2. sama da OD 219mm a cikin yawa ko bisa ga ra'ayin da aka saba
3. Tan 25/kwantenar da tan 5/girma don yin odar gwaji;
4. Ga akwati mai inci 20, matsakaicin tsawonsa shine mita 5.8;
5. Ga akwati mai inci 40, matsakaicin tsawon shine11.8m.










