ASTM A53 グレードA
TUSPIPE supplies ASTM A53 Grade A pipes fully certified to meet the A53 mechanical and chemical requirements. This guarantees stable performance for low-pressure and structural applications, giving customers reliable quality from the start.
ASTM A53 グレードA
ASTM A53 Grade A pipe (also known as an ASME SA53 pipe) is intended for mechanical and pressure applications, although it may also be used in general in steam, water, gas, and airlines. It is suitable for welding as well as shaping operations like coiling, bending, and flanging under certain circumstances.
ASTM A53 の基準のひとつである。 米国材料試験協会. ASTM A53 Grade A welding and coverings are best done with a pipe. Seamless and welded nominal (average) wall pipe in black and hot-dipped galvanized for coiling, bending, flanging, and other particular operations. The continuous-welded pipe should not be flanged. On the order, the purpose for which the pipe is designed should be indicated.
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。
Types of ASTM A53 Grade A Pipes
- ASTM A53 Grade A Type E – Electric Resistance Welded Pipe.
The heat generated by electric resistance between the pipe’s opposing ends welds the longitudinal connection of Type E Garde A and Garde B pipes. A set of rollers is also utilized in this procedure to join heated ends. After welding, the weld seam of Grade pipes is heat-treated to a minimum of 540°C.
- ASTM A53 Grade A Type S – Seamless Pipe
The extrusion process is used to manufacture Type S pipes. The raw steel used to manufacture pipes is produced using an open-hearth furnace, an electric furnace, or a basic-oxygen method.
- ASTM A53 Grade A Type F – Forge Welding Pipe
The Type F Grade A pipe is produced from a continuous coil, and the longitudinal junction is welded by forge welding. Sets of rollers are employed in this procedure to apply mechanical pressure to the heated ends of the coil.
Dimensions and Sizes of ASTM A53 Grade a Pipe
| NPS | O.D. | 公称肉厚 | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 識別名 | インチ | mm | SCH5S | SCH10S | SCH10 | SCH20 | SCH30 | SCH40 | SCH60 | SCH80 | SCH100 | SCH120 | SCH140 | SCH160 | ス | XS | XXS |
| 50 | 2″ | 60.3 | 1.65 | 2.77 | - | - | - | 3.91 | - | 5.54 | - | - | - | 8.74 | 3.91 | 5.54 | 11.07 |
| 65 | 2 1/2″ | 73 | 2.11 | 3.05 | - | - | - | 5.16 | - | 7.01 | - | - | - | 9.53 | 5.16 | 7.01 | 14.02 |
| 80 | 3″ | 88.9 | 2.11 | 3.05 | - | - | - | 5.49 | - | 7.62 | - | - | - | 11.13 | 5.49 | 7.52 | 15.24 |
| 90 | 3 1/2″ | 101.6 | 2.11 | 3.05 | - | - | - | 5.74 | - | 8.08 | - | - | - | - | 5.74 | 8.08 | - |
| 100 | 4″ | 114.3 | 2.11 | 3.05 | - | - | - | 6.02 | - | 8.58 | - | 11.13 | - | 13.49 | 6.02 | 8.56 | 17.12 |
| 125 | 5″ | 141.3 | 2.77 | 3.4 | - | - | - | 6.55 | - | 9.53 | - | 12.7 | - | 15.88 | 6.55 | 9.53 | 18.05 |
| 150 | 6″ | 168.3 | 2.77 | 3.4 | - | - | - | 7.11 | - | 10.97 | - | 14.27 | - | 18.26 | 7.11 | 10.97 | 21.95 |
| 200 | 8″ | 219.1 | 2.77 | 3.76 | - | 6.35 | 7.04 | 8.18 | 10.31 | 12.7 | 15.09 | 18.26 | 20.62 | 23.01 | 8.18 | 12.7 | 22.23 |
| 250 | 10″ | 273.1 | 3.4 | 4.19 | - | 6.35 | 7.8 | 9.27 | 12.7 | 15.09 | 18.26 | 21.44 | 25.4 | 28.58 | 9.27 | 12.7 | 25.4 |
| 300 | 12″ | 323.9 | 3.96 | 4.57 | - | 6.35 | 8.38 | 10.31 | 14.27 | 17.48 | 21.44 | 25.4 | 28.58 | 33.32 | 9.53 | 12.7 | 25.4 |
| 350 | 14″ | 355.5 | 3.96 | 4.78 | 6.35 | 7.92 | 9.53 | 11.13 | 15.09 | 19.05 | 23.83 | 27.79 | 31.75 | 35.71 | 9.53 | 12.7 | - |
| 400 | 16″ | 406.4 | 4.19 | 4.78 | 6.35 | 7.92 | 9.53 | 12.7 | 16.66 | 21.44 | 26.19 | 30.96 | 36.53 | 40.49 | 9.53 | 12.7 | - |
| 450 | 18″ | 457.2 | 4.19 | 4.78 | 6.35 | 7.92 | 11.13 | 14.27 | 19.05 | 23.83 | 39.36 | 34.93 | 39.67 | 45.24 | - | - | - |
| 500 | 20″ | 508 | 4.78 | 5.54 | 6.35 | 9.53 | 12.7 | 15.09 | 20.62 | 26.19 | 32.54 | 38.1 | 44.45 | 50.01 | - | - | - |
| 550 | 22″ | 558.8 | 4.78 | 5.54 | 6.35 | 9.53 | 12.7 | - | 22.23 | 28.58 | 34.93 | 41.28 | 47.63 | 53.98 | - | - | - |
| 600 | 24″ | 609.6 | 5.54 | 6.35 | 6.35 | 9.53 | 14.27 | 17.48 | 24.61 | 30.96 | 38.89 | 46.02 | 52.37 | 59.54 | - | - | - |
ASTM A53グレードAパイプの化学成分
| エレメント | Type S (Seamless) Grade A | Type E (ERW) Grade A | Type F (Forge Welding) Grade A |
|---|---|---|---|
| カーボン最大% | 0.25 | 0.25 | 0.3 |
| マンガン % | 0.95 | 0.95 | 1.2 |
| リン、最大% | 0.05 | 0.05 | 0.05 |
| 硫黄、最大% | 0.045 | 0.045 | 0.045 |
| 銅、最大% | 0.4 | 0.4 | 0.4 |
| ニッケル、最大% | 0.4 | 0.4 | 0.4 |
| クロム、最大% | 0.4 | 0.4 | 0.4 |
| モリブデン、最大% | 0.15 | 0.15 | 0.15 |
| バナジウム、最大% | 0.08 | 0.08 | - |
Mechanical Properties of ASTM A53 Grade A Pipes
| 種類とグレード | 最小引張強度 | 最小降伏強度 |
|---|---|---|
| Type E and S – ASTM A53 Grade A | 330Mpa / 48000psi | 205Mpa / 30000psi |
| Type F – ASTM A53 Grade A | 330Mpa / 48000psi | 205Mpa / 30000psi |
ASTM A53グレードAパイプ製造時の試験と検査
- 化学分析 - 試験数：500ロットごとに2個、または1ヒートごとに2個（どちらかのパイプが不合格の場合、同じロットからさらに2個を試験しなければならない）。
- 引張試験 - この試験は、パイプの機械的特性を評価するために行われる。溶接管の場合、溶接強度は管本体の強度より低くてはならない。
- 曲げ試験 - パイプ径NPS2以下では、パイプの延性を判断するために曲げ試験が行われる。曲げ試験は、状況に応じて90度または180度で行われる。
- 平坦化テスト – For ductility, pipe sizes greater than NPS 2 are flattening test. In line with ASTM A53, a pipe sample is sliced and flattened between two flat surfaces.
- ハイドロテスト - これは、漏れの有無を判断するために、パイプの長さごとに行われるテストである。少なくとも5秒間は圧力を維持しなければならない。
- 溶接継目超音波または電磁気試験 - この非破壊試験は、溶接部の全長にわたって実施され、溶接部の完全性をチェックする。
Thickness and Mass Tolerance of ASTM A53 Grade A Pipes
| 項目 | O.D. | オーバー | アンダー |
|---|---|---|---|
| 外径 | NPS 1/8～1-1/2, DN 6～40 | ±0.4mm | ±0.4mm |
| NPS 2以上、DN 50以上 | ±1% | ±1% | |
| 任意の位置での肉厚 | - | ±12.5% | |
| 重量 | ±10% | ±10% | |
Type of ASTM A53 Grade A Pipe Ends
- Pipes with diameters less than 0.500 inches and STD / XS pipes with plain or beveled ends are examples of ASTM A53 pipe ends.
- Pipe schedules with diameters higher than 0.500 inches and XXS: Ends are squared cut and simple.
- Thread protection is necessary for pipes bigger than 4 inches in diameter that have threaded ends.
ASTM A53 Grade A Pipe Marking Contents
The following marks must be applied to each length of pipe (or bundle for smaller diameters):
- A53タイプメーカー名（S、E、F）
- Dimensions and timetable (from 10 to 160 and XXS)
- The designation “ASTM A53”
- The heat number
