| Samfuri | Bututun Karfe Mai Zafi |
| Kayan Aiki | Karfe na Carbon |
| Matsayi | Q195 = S195 / A53 Aji A Q235 = S235 / A53 Daraja B / A500 Daraja A / STK400 / SS400 / ST42.2 Q345 = S355JR / A500 Daraja B Daraja C |
| Daidaitacce | ASTM A53, ASTM A500, A36, ASTM A795,ISO65, ANSI C80, DIN2440, JIS G3444,GB/T3091, GB/T13793 |
| saman | Rufin zinc 200-500g/m2 (30-70um) |
| Ƙarshe | Ƙarshen lanƙwasa |
| da ko ba tare da huluna ba |
Bututun ƙarfe na SCH40 GI mai ƙarshen lanƙwasa yana nufin bututun ƙarfe wanda aka ƙera don ya cika ƙa'idar SCH40 don kauri bango kuma an yi shi da ƙarfe mai galvanized. "GI" yana nufin "ƙarfe mai galvanized" yana nufin cewa an shafa bututun da wani Layer na zinc don kare shi daga tsatsa.
Kalmar "ƙarshen da aka lankwasa" tana nuna cewa ƙarshen bututun an tsara su da ramuka don sauƙaƙe shigar da haɗin gwiwa ko kayan haɗin inji. Ana amfani da ƙarshen da aka lankwasa a tsarin kariyar wuta, tsarin HVAC, da sauran aikace-aikace inda ake buƙatar haɗin sauri da aminci.
| OD | DN | ASTM A53 A795 GRA / B | |
| SCH10S | STD SCH40 | ||
| INCI | MM | (mm) | (mm) |
| 1/2” | 15 | 2.11 | 2.77 |
| 3/4” | 20 | 2.11 | 2.87 |
| 1” | 25 | 2.77 | 3.38 |
| 1-1/4” | 32 | 2.77 | 3.56 |
| 1-1/2” | 40 | 2.77 | 3.68 |
| 2” | 50 | 2.77 | 3.91 |
| 2-1/2” | 65 | 3.05 | 5.16 |
| 3” | 80 | 3.05 | 5.49 |
| 4” | 100 | 3.05 | 6.02 |
| 5” | 125 | 3.4 | 6.55 |
| 6” | 150 | 3.4 | 7.11 |
| 8” | 200 | 3.76 | 8.18 |
Aikace-aikacen Bututun Karfe Mai Lankwasa na SCH40:
Gine-gine / kayan gini bututun ƙarfe
Kariyar wuta bututun ƙarfe
Ruwa mai ƙarancin matsin lamba, ruwa, iskar gas, mai, bututun layi
Bututun ban ruwa
Layukan samar da bututun ƙarfe masu zafi guda 40
Masana'antu:
Kamfanin Tianjin Youfa Steel Pipe Group Co.,Ltd.-Lambar 1 Reshe;
Tangshan Zhengyuan Karfe bututu Co., Ltd;
Kamfanin Handan Youfa Steel Pipe Co., Ltd.
Kamfanin Shanxi Youfa Steel Bututun Kaya, Ltd.
