ASTM A135 グレードB
TUSPIPE’s ASTM A135 Grade B pipes meet higher-grade ASTM A135 requirements. The enhanced properties guarantee stable performance for fire-protection systems, mechanical pipelines, and general construction.
ASTM A135 グレードB
The steel grade ASTM A135 Grade B is utilized for Electric-Resistance-Welded (ERW) steel pipes for conveying gas, vapor, water, or other liquid, it is also commonly used in fire-fighting applications. The chemical and mechanical qualities of ASTM A135 Grade B pipes make them appropriate for high-pressure applications, including the transport of gas, vapor, water, and other fluids. In certain nations, ASTM A135 Grade B pipes are also utilized as fire sprinkler pipes. Only Grade B pipes are not designed for flanging and bending, according to the standard.
ASTM A135 is a standard specification for electric-resistance-welded steel pipe. The pipe is intended for conveying gas, vapor, water, or other liquid. Grade A pipe is the standard grade, while, Grade B pipe is the higher-strength alternative. The weld seam of electric-resistance welded pipe to Grade B pipe shall be heat treated after welding or processed in such a manner that no untempered martensite remains. This requirement helps to ensure that the finished pipe will have superior strength and ductility. In addition, the heat treatment helps to prevent corrosion of the weld seam. ASTM A135 is an important specification for those who need a high-quality, durable pipe for their critical applications.
タスパイプを選ぶ理由
1998年以来、天津聯合鋼管有限公司(TUSPIPE)は高品質のラインパイプの供給に尽力しています。
年間生産能力は50万トンを超え、石油・ガス開発、送電、船舶・自動車建造、水・電気、環境保護、機械工学、インフラ建設など、さまざまな分野・業界にサービスを提供している。
TUSPIPEは製品の品質を重視し、厳格な品質管理を行っている。製品の品質を維持するため、2004年から試験検査センターを設立しました。最新の試験・検査設備を備え、引張試験、水力試験、衝撃試験、DWTTなどを実施することができます。
Chemical Composition of ASTM A135 Grade B
| エレメント | カーボン | マンガン | リン | 硫黄 |
|---|---|---|---|---|
| グレードB | 0.3% | 1.2% | 0.035% | 0.035% |
Mechanical Properties of ASTM A135 Grade B
| ITEM | グレードB |
|---|---|
| Tensile strength, min, ksi (MPa) | 60 (414) |
| Yield strength, min, ksi (MPa) | 35 (241) |
| Elongation in 2 in. (50 mm), min, % | |
| For pipe having a specified wall thickness of5 ⁄16in. (7.9 mm) or more, if tested using a longitudinal strip test specimen | 30 |
| For pipe having a specified wall thickness of less than5 ⁄16 in. (7.9 mm), if tested using a longitudinal strip test specimen | B |
| For pipe of any size, if tested using a full-size longitudinal test specimen | 30 |
Specifications of ASTM A135 Grade B
The American Society for Testing and Materials A135 Grade B covers ERW steel pipe in sizes NPS 2 to 30, with nominal (average) wall thickness up to 12.7mm, inclusive, and in nominal sizes NPS 3/4 to 5 with a nominal (average) wall thickness of 2.11mm to 3.40mm, depending on size. The standard contains a comprehensive listing of ASTM A135 standardized pipe dimensions that are contained in ASME B36.10M.
| 博士号 | O.D. | SCH 10 | SCH 30/40 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 壁の厚さ | 公称重量 | 壁の厚さ | 公称重量 | ||||||||
| (mm） | (インチ） | (mm） | (インチ） | (mm） | (インチ） | (kg/mtrs） | (ポンド／フィート） | (mm） | (インチ） | (kg/mtrs） | (ポンド／フィート） |
| 15 | 1/2 | 21.30 | 0.84 | —- | —- | —- | —- | 2.77 | 0.109 | 1.27 | 0.85 |
| 20 | 3/4 | 26.70 | 1.05 | 2.11 | 0.083 | 1.28 | 0.96 | 2.87 | 0.113 | 1.69 | 1.13 |
| 25 | 1 | 33.40 | 1.32 | 2.77 | 0.109 | 2.09 | 1.41 | 3.38 | 0.133 | 2.5 | 1.68 |
| 32 | 1-1/4 | 42.20 | 1.66 | 2.77 | 0.109 | 2.69 | 1.81 | 3.56 | 0.14 | 3.39 | 2.27 |
| 40 | 1-1/2 | 48.30 | 1.90 | 2.77 | 0.109 | 3.11 | 2.09 | 3.68 | 0.145 | 4.05 | 2.72 |
| 50 | 2 | 60.30 | 2.38 | 2.77 | 0.109 | 3.93 | 2.64 | 3.91 | 0.154 | 5.45 | 3.66 |
| 65 | 2-1/2 | 73.00 | 2.88 | 3.05 | 0.12 | 5.26 | 3.53 | 5.16 | 0.203 | 8.64 | 5.8 |
| 80 | 3 | 88.90 | 3.50 | 3.05 | 0.12 | 6.46 | 4.34 | 5.49 | 0.216 | 11.29 | 7.58 |
| 90 | 3-1/2 | 101.60 | 4.00 | 3.05 | 0.12 | 7.41 | 4.98 | 5.74 | 0.226 | 13.58 | 9.12 |
| 100 | 4 | 114.30 | 4.50 | 3.05 | 0.12 | 8.37 | 5.62 | 6.02 | 0.237 | 16.09 | 10.8 |
| 125 | 5 | 141.30 | 5.56 | 3.4 | 0.134 | 11.58 | 7.78 | 6.55 | 0.258 | 21.79 | 14.63 |
| 150 | 6 | 168.30 | 6.63 | 3.4 | 0.134 | 13.85 | 9.30 | 7.11 | 0.28 | 28.29 | 18.99 |
| 200 | 8 | 219.10 | 8.63 | 4.78 | 0.188 | 25.26 | 16.96 | 7.04 | 0.277 | 36.82 | 24.72 |
| 250 | 10 | 273.10 | 10.75 | 4.78 | 0.188 | 31.62 | 21.23 | 7.08 | 0.307 | 51.05 | 34.27 |
