ASTM A135 Standard Specification for Electric-Resistance-Welded Steel Pipe.ASTM A135電阻焊接鋼管標準規範。

This specification covers two grades of electric-resistance-welded steel pipe intended for conveying gas, vapor, water or other liquid. The steel shall be made by either or both basic-oxygen or electric-furnace processes. Steel may be cast in ingots or may be strand cast. The pipe shall be manufactured from flat rolled steel in individual lengths or continuous length by electric-resistance or electric-induction welding without the addition of extraneous material. 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. Tensile and chemical requirements of the steel are provided. Specimens of the steel pipes are subject to flattening test and hydrostatic test. A nondestructive electric test, either electromagnetic (eddy current) or ultrasonic test, may be preferred as an alternate to the hydrostatic test.

本規範涵蓋了用於輸送氣體、蒸汽、水或其他液體的兩種等級的電阻焊接鋼管。鋼材應采用堿性氧氣或電爐工藝中的一種或兩種製造。鋼可以鑄成鋼錠，也可以鑄成鑄坯。管道應由扁鋼製成，可采用電阻焊或電感應焊以單個長度或連續長度製造，不添加任何外來材料。電阻焊管與B級管的焊縫應在焊接後進行熱處理，或以不殘留未回火馬氏體的方式進行加工。提供了鋼的拉伸和化學要求。鋼管試樣應進行壓扁試驗和靜水壓試驗。非破壞性電測試，無論是電磁（渦流）還是超聲波測試，都可以作為靜水壓測試的替代方案。

ASTM A135, identical with ASME SA-135, is the standard specification for electric-resistance-welded steel pipe. It covers two grades of ERW steel pipe in NPS 2 to NPS 30 [DN 50 to DN 750], with nominal (average) wall thickness up to 0.500″ [12.7 mm], and in nominal sizes NPS 3/4 to NPS 5 [DN 20 to DN 125] with nominal (average) wall thickness 0.083″ [2.11 mm] to 0.134″ [3.40 mm], depending on size. Pipe having other dimensions may be furnished provided such pipe complies with all other requirements of this specification.

ASTM A135是電阻焊接鋼管的標準規範，與ASME SA-135相同。它涵蓋了NPS 2至NPS 30[DN 50至DN 750]的兩種等級的ERW鋼管，公稱（平均）壁厚高達0.500英寸[12.7毫米]，公稱尺寸為NPS 3/4至NPS 5[DN 20至DN 125]，公名（平均）管壁厚為0.083英寸[2.11毫米]至0.134英寸[3.40毫米]，具體取決於尺寸。如果管道符合本規範的所有其他要求，則可以提供其他尺寸的管道。

The ASTM A135 ERW steel pipes are intended for conveying gas, vapor, water or other liquid; only Grade A is adapted for flanging and bending. The selection of this ERW pipe for various applications depends on its dimensions, properties, and conditions of service. The pipe may be furnished either non-expanded or cold expanded at the option of manufacturer. When pipe is cold expanded, the amount of expansion shall not exceed 1.5% of the outside diameter of pipe size.

ASTM A135 ERW鋼管用於輸送氣體、蒸汽、水或其他液體；隻有A級適用於翻邊和彎曲。為各種應用選擇這種ERW管取決於其尺寸、性能和使用條件。製造商可選擇提供非膨脹或冷膨脹管道。當管道冷膨脹時，膨脹量不得超過管道外徑的1.5%。

Chemical Composition of ASTM A135 ASTM A135的化學成分

*The steel from which the ASTM A135 ERW pipe is made shall conform to the chemical requirements prescribed in this table, based on heat analysis.

根據熱分析，製造ASTM A135 ERW管的鋼材應符合本表規定的化學要求。

Mechanical Property of ASTM A135 ASTM A135的機械性能

*The yield strength shall be determined by the offset method utilizing 0.2% of the gauge length or by the total extension under load method using 0.5% of the gauge length.

*屈服強度應通過使用0.2%標距長度的偏移法或使用0.5%標距長度在負載下的總延伸法來確定。

Manufacture & Heat Treatment製造和熱處理

The steel shall be made by either or both of the following processes: basic-oxygen or electric furnace. The steel may be cast in ingots or may be strand cast. In modern industry, ASTM A135 ERW steel pipes, either Grade A or Grade B, are generally made by a high-frequency electric-resistance welding process. The pipe shall be manufactured from flat rolled steel (plate) in individual lengths or in continuous length by electric-resistance or electric-induction welding without the addition of extraneous material. In simple words, no filler metal is required. The weld seam of ERW pipe to ASTM A135 Grade B shall be heat treated after welding to a minimum temperature of 1000°F [540°C] or processed in such a manner that no untempered martensite remains.

鋼材應通過以下任一或兩種工藝製成：堿性氧氣或電動家具。鋼可以鑄成錠，也可以鑄成鑄坯。在現代工業中，ASTM A135 ERW鋼管，無論是A級還是B級，通常都是通過高頻電阻焊接工藝製成的。管道應由扁鋼（板）製成，可采用電阻焊或電感應焊以單個長度或連續長度製造，不添加任何外來材料。簡單地說，不需要填充金屬。符合ASTM A135 B級的ERW管焊縫應在焊接後進行熱處理，最低溫度為1000°F[540°C]，或以不殘留未回火馬氏體的方式進行處理。

Surface Appearance & End Preparation表麵外觀和端部處理

The ASTM A135 ERW steel pipes shall be reasonably straight and free of defects. Surface imperfections in excess of 12.5% of the nominal wall thickness shall be avoided. The pipes may be furnished with plain end, beveled end, or threaded end. Especially, ERW pipes furnished to SCH 10 shall be plain end only. All inside and outside cutting burrs shall be removed. Each length of threaded pipe shall be provided with one coupling for connection purpose.

ASTM A135 ERW鋼管應合理筆直，無缺陷。應避免表麵缺陷超過標稱壁厚的12.5%。管道可配備平端、斜端或螺紋端。特別是，提供給SCH 10的ERW管應僅為平端。應清除所有內外切割毛刺。每段螺紋管應配備一個聯軸器進行連接。

Inspection & Test檢驗與測試

Strict quality control shall be implemented to ensure the good quality of ASTM A135 ERW steel pipes. This includes chemical analysis of each heat lot, tension test, dimensional inspection, visual examination, hydrostatic test, flattening test, or non-destructive test (NDT) when required by the purchaser.

應實施嚴格的質量控製，以確保ASTM A135 ERW鋼管的良好質量。這包括每個熱批次的化學分析、張力試驗、尺寸檢查、目視檢查、水壓試驗、平整試驗或買方要求的無損檢測（NDT）。