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seamless pipes are produced starting from steel billets, that are heated and perforated to create the tubular section. the word “seamless” means the absence of seam welds.
seamless steel pipes are used for different applications within the oil & gas industry:
upstream operations (octg pipes)
midstream (transmission and distribution of fluids, as oil, gas, steam, acids, slurries)
downstream (process piping to refine oil and gas in derivative products)
general plumbing applications for utility services
the most common types of pipes used in the oil&gas industry are (astm pipe specifications):
|
api spec 5l/5ct |
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|
product name |
executive standard |
dimension (mm) |
steel code/ steel grade |
|
casting |
api 5ct |
114-219 x 5.2-22.2 |
j55, k55, n80, l80, p110 |
|
tubing |
api 5ct |
48.3-114.3 x 3.2-16 |
j55, k55, n80, l80, h40 |
|
casting |
api 5l |
10.3-1200 x 1.0-120 |
a, b, x42, x46, x52, psl1 / psl2 |
|
astm/asme |
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|
product name |
executive standard |
dimension (mm) |
steel code/ steel grade |
|
black and hot-dipped zinc-coated steel pipes seamless |
astm a53 |
0.3-1200 x 1.0-150 |
gr.a, gr.b, gr.c |
|
seamless carbon steel for high temperature service |
astm a106 |
10.3-1200 x 1.0-150 |
gr.b, gr.c |
|
seamless cold-drawn low-carbon steel heat-exchanger and condenser tubes |
astm a179 |
10.3-426 x 1.0-36 |
low carbon steel |
|
seamless carbon steel boiler tubes for high pressure |
astm a192 |
10.3-426 x 1.0-36 |
low carbon steel |
|
seamless cold-drawn intermediate alloy steel heat-exchanger and condenser tubes |
astm a199 |
10.3-426 x 1.0-36 |
t5, t22 |
|
seamless medium-carbon steel boiler and superheater tubes |
astm a210 |
10.3-426 x 1.0-36 |
a1, c |
|
seamless ferritic and austenitic alloy steel boiler, superheater and heat-exchanger tubes |
astm a213 |
10.3-426 x 1.0-36 |
t5, t5b, t9 , t11, t22 ,t91 |
|
seamless carbon and alloy steel for mechanical tubing |
astm a333 |
1/4″-42″ x sch20-xxs |
grade 1, gr.3,gr.6, gr.8 , gr.9 |
|
seamless cold-drawn carbon steel feedwater heater tubes |
astm a556 |
10.3-426 x 1.0-36 |
a2, b2 |
|
for seamless ferritic alloy-steel pipe for high-temperature service |
astm a335 |
1/4″-42″ x sch20-xxs |
p5, p9 ,p11, p91, p22, p92 |
|
din/en |
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|
product name |
executive standard |
dimension (mm) |
steel code/ steel grade |
|
seamless steel tubes for elevated temperature |
din 17175 |
10-762 x 1.0-120 |
st35.8,st45.8, 10crmo910, 15mo3, 13crmo44, stpl340, stb410, stb510, wb36 |
|
seamless circular tubes of non alloys steels with special quality requirements. |
din 1629 |
13.5-762 x 1.8-120 |
st37.0, st44.0, st52.0 |
|
seamless steel tubes for pressure purposes |
en 10216 |
4.0-60.0 x 0.5-8 |
p235gh tc1, p235gh tc2, 16mo3 |
