1.低壓流體輸送用焊接鋼管（GB/T3092-1993）也稱（chēng）一般焊管，俗稱黑管。是用於輸送水、煤氣、空氣、油和（hé）取暖蒸汽等一般較低（dī）壓力流（liú）體和其（qí）他用（yòng）途（tú）的焊接鋼管。鋼管接壁厚分為普通鋼管和加厚（hòu）鋼管；接管端形式分為不帶螺紋鋼管（光管）和帶螺紋鋼管。鋼管的規格用公稱口徑（mm）表示，公稱口徑是內徑的（de）近似值。習慣上常用英寸（cùn）表示，如（rú）11/2 等。低壓流體輸（shū）送用焊接鋼管除直接（jiē）用（yòng）於輸送流體外，還大量用作低壓流體輸送（sòng）用鍍鋅焊接鋼（gāng）管的原管。
1. Welded steel pipes for low-pressure fluid transportation (GB/T3092-1993) are also called general welded pipes, commonly known as black pipes. It is a welded steel pipe used for conveying water, gas, air, oil, heating steam and other general low pressure fluids and other purposes. The wall thickness of steel pipe can be divided into ordinary steel pipe and thickened steel pipe, and the nozzle end can be divided into non-threaded steel pipe (smooth pipe) and threaded steel pipe. The specification of steel pipe is expressed by nominal diameter (mm), which is the approximate value of inner diameter. It is customarily expressed in inches, such as 11/2, etc. In addition to directly conveying fluids, welded steel pipes for low-pressure fluid conveying are also widely used as raw pipes for galvanized welded steel pipes for low-pressure fluid conveying. 2.低（dī）壓流體輸送用鍍鋅焊接鋼管（GB/T3091-1993）也稱鍍（dù）鋅電焊鋼管，俗稱白管（guǎn）。是用於輸送水（shuǐ）、煤氣、空氣、油及取暖蒸汽、暖水等一般較低壓力（lì）流體（tǐ）或其他（tā）用途的熱浸鍍鋅焊接（爐焊或電焊）鋼管。鋼管接（jiē）壁厚分為普（pǔ）通鍍鋅（xīn）鋼管（guǎn）和（hé）加厚鍍鋅鋼管（guǎn）；接管端形式分為不帶螺紋鍍鋅鋼管和帶（dài）螺紋鍍鋅鋼管。鋼管（guǎn）的規格用公稱口徑（jìng）（mm）表示，公稱口徑是內徑的（de）近似值。習慣上常用英寸表示，如11/2 等。
2. Galvanized welded steel pipes for low pressure fluid transportation (GB/T3091-1993) are also called galvanized welded steel pipes, commonly known as white pipes. It is a hot dip galvanized welded (furnace welding or electric welding) steel pipe used for conveying water, gas, air, oil, heating steam, warm water and other generally low pressure fluids or other purposes. The wall thickness of steel pipe can be divided into common galvanized steel pipe and thick galvanized steel pipe, and the end of pipe can be divided into non-threaded galvanized steel pipe and threaded galvanized steel pipe. The specification of steel pipe is expressed by nominal diameter (mm), which is the approximate value of inner diameter. It is customarily expressed in inches, such as 11/2, etc.
3.普通碳素鋼電（diàn）線套管（GB3640-88）是工業與民用建築、安裝機器設備等電氣安裝工（gōng）程中用於保護電線的鋼管。
3. Common Carbon Steel Wire Bushing (GB3640-88) is a steel pipe used to protect electric wires in industrial and civil buildings, installation machinery and equipment and other electrical installation projects.
4.直（zhí）縫電焊鋼管（YB242-63）是焊縫與鋼管縱向平行的（de）鋼管。通常分為公製電焊鋼管、電焊薄壁管、變壓器冷卻油管等等。
4. Longitudinal welded steel pipe (YB242-63) is a steel pipe with longitudinal parallel weld and steel pipe. Usually it is divided into metric welded steel pipe, welded thin-walled pipe, transformer cooling oil pipe and so on.
5.承壓流體（tǐ）輸送（sòng）用螺旋縫埋弧焊鋼管（SY5036-83）是以熱軋鋼帶卷作管坯，經常溫螺旋成型，用雙麵埋弧焊法焊接，用於（yú）承壓流體輸送（sòng）的（de）螺旋縫鋼管。鋼管承壓能力強，焊接性（xìng）能好（hǎo），經過各種嚴格的（de）科學檢（jiǎn）驗和測試，使用安全可靠。鋼管口徑大（dà），輸送效率高，並可（kě）節約鋪設管線的投資。主要用於輸送石油、天然氣的管線。
5. Spiral submerged arc welded pipe (SY5036-83) for pressure fluid transportation is a kind of spiral welded pipe with hot rolled steel strip coil as billet, which is spirally formed at normal temperature and welded by double-sided submerged arc welding. Steel pipe has strong pressure bearing capacity and good welding performance. It is safe and reliable to use after various strict scientific tests and tests. The steel pipe has large diameter, high conveying efficiency and saves investment in laying pipelines. It is mainly used for pipelines to transport oil and natural gas.
6.承壓流體輸送用螺（luó）旋（xuán）縫高頻焊（hàn）鋼管（SY5038-83）是以熱軋鋼帶卷（juàn）作管坯，經常溫螺旋成型，采用（yòng）高頻搭接焊法焊接的，用於（yú）承壓流體輸送的螺旋（xuán）縫高頻焊鋼管。鋼管（guǎn）承壓能力強，塑性好，便於焊接和加工成型；經過各種嚴格和科（kē）學檢驗（yàn）和測試，使用（yòng）安（ān）全可（kě）靠，鋼（gāng）管口徑大，輸送效率（lǜ）高，並可節省鋪設管（guǎn）線的投資。主要用於鋪設輸送石油、天然氣等的管線。
6. The SY5038-83 spiral seam high frequency welded steel pipe for pressure fluid transportation is a high frequency spiral seam high frequency welded steel pipe for pressure fluid transportation, which is formed by hot rolled steel strip coil at regular temperature and welded by high frequency lap welding. The steel pipe has strong bearing capacity, good plasticity, and is easy to be welded and processed. Through various strict and scientific tests and tests, it is safe and reliable to use, large diameter of steel pipe, high transportation efficiency, and can save the investment of laying pipelines. It is mainly used for laying pipelines for oil and natural gas transportation.
7.一般低（dī）壓流體輸送用螺旋縫埋弧焊鋼管（guǎn）（SY5037-83）是以熱（rè）軋鋼帶（dài）卷作管坯，經常溫螺（luó）旋成型，采用雙麵自動埋弧焊或單麵（miàn）焊法製成的（de）用於水、煤氣（qì）、空氣和蒸汽（qì）等一（yī）般低（dī）壓流體輸送（sòng）用埋弧焊鋼管。
7. Spiral submerged arc welded steel pipe (SY5037-83) for low-pressure fluid transportation is a submerged arc welded steel pipe for general low-pressure fluid transportation, such as water, gas, air and steam, which is manufactured by double-sided automatic submerged arc welding or single-sided welding with hot-rolled steel strip coil as billet and spiral forming at normal temperature.
8.一（yī）般（bān）低壓流體輸送用螺旋縫高頻（pín）焊鋼管（SY5039-83）是以熱軋鋼帶卷作管（guǎn）坯，經常溫螺旋成型，采（cǎi）用高頻搭接焊法焊接用於一般低壓流體輸送用螺旋縫高頻焊（hàn）鋼管。
8. Spiral seam high frequency welded steel pipes (SY5039-83) for low-pressure fluid transportation are usually formed by hot-rolled steel strip coil at normal temperature. High frequency lap welding is used to weld high frequency spiral seam welded steel pipes for general low-pressure fluid transportation.
9．樁用螺旋焊（hàn）縫鋼管（SY5040-83）是以熱軋鋼帶卷作管坯，經常溫螺旋成型，采用雙麵埋弧焊接或高頻焊接（jiē）製成的，用於土木建築結構、碼頭、橋梁等基礎樁用鋼管。
9. Spiral welded steel pipe for piles (SY5040-83) is made of hot rolled steel strip coil as tube blank, which is spirally formed at normal temperature and is welded by double-sided submerged arc welding or high frequency welding. It is used for steel pipe for foundation piles such as civil building structures, wharfs and bridges.
