Stock list
What's on the ground right now
1,740 size combinations of seamless steel pipe, OD Φ95–635 mm, wall 13–140 mm. Search by grade or size below — quantities turn over daily, so confirm availability when you inquire.
1,740
Size combinations in this list
Φ95–635 mm
Outside diameter range
13–140 mm
Wall thickness range
| Grade | OD × Wall (mm) | Availability |
|---|---|---|
| 20# | Φ95 × 20 | Limited — ask |
| 20# | Φ95 × 23 | In stock |
| 20# | Φ108 × 18 | In stock |
| 20# | Φ114 × 16 | Limited — ask |
| 20# | Φ114 × 22 | In stock |
| 20# | Φ127 × 24 | In stock |
| 20# | Φ127 × 26 | In stock |
| 20# | Φ133 × 24 | In stock |
| 20# | Φ133 × 35 | Limited — ask |
| 20# | Φ140 × 40 | In stock |
| 20# | Φ146 × 32 | Limited — ask |
| 20# | Φ152 × 28 | In stock |
| 20# | Φ159 × 24 | In stock |
| 20# | Φ159 × 38 | In stock |
| 20# | Φ159 × 40 | In stock |
| 20# | Φ168 × 32 | Limited — ask |
| 20# | Φ168 × 38 | Limited — ask |
| 20# | Φ168 × 40 | Limited — ask |
| 20# | Φ168 × 42 | Limited — ask |
| 20# | Φ168 × 45 | In stock |
| 20# | Φ168 × 46 | Limited — ask |
| 20# | Φ170 × 50 | Limited — ask |
| 20# | Φ178 × 19 | Limited — ask |
| 20# | Φ180 × 30 | In stock |
| 20# | Φ180 × 32 | Limited — ask |
| 20# | Φ180 × 35 | In stock |
| 20# | Φ180 × 38 | Limited — ask |
| 20# | Φ180 × 40 | Limited — ask |
| 20# | Φ180 × 42 | Limited — ask |
| 20# | Φ180 × 45 | In stock |
| 20# | Φ180 × 50 | Limited — ask |
| 20# | Φ188 × 25 | Limited — ask |
| 20# | Φ194 × 21 | In stock |
| 20# | Φ194 × 25 | In stock |
| 20# | Φ194 × 25.4 | In stock |
| 20# | Φ194 × 26 | Limited — ask |
| 20# | Φ194 × 30 | In stock |
| 20# | Φ194 × 32 | Limited — ask |
| 20# | Φ194 × 35 | In stock |
| 20# | Φ194 × 40 | Limited — ask |
| 20# | Φ194 × 45 | In stock |
| 20# | Φ194 × 55 | Limited — ask |
| 20# | Φ194 × 60 | Limited — ask |
| 20# | Φ203 × 20 | Limited — ask |
| 20# | Φ203 × 22 | Limited — ask |
| 20# | Φ203 × 24 | Limited — ask |
| 20# | Φ203 × 25 | In stock |
| 20# | Φ203 × 30 | Limited — ask |
| 20# | Φ203 × 32 | Limited — ask |
| 20# | Φ203 × 40 | In stock |
| 20# | Φ203 × 45 | In stock |
| 20# | Φ203 × 50 | Limited — ask |
| 20# | Φ203 × 55 | Limited — ask |
| 20# | Φ210 × 22 | Limited — ask |
| 20# | Φ210 × 64 | Limited — ask |
| 20# | Φ219 × 18 | In stock |
| 20# | Φ219 × 20 | In stock |
| 20# | Φ219 × 22 | In stock |
| 20# | Φ219 × 23 | Limited — ask |
| 20# | Φ219 × 25 | Limited — ask |
| 20# | Φ219 × 27 | Limited — ask |
| 20# | Φ219 × 32 | Limited — ask |
| 20# | Φ219 × 35 | Limited — ask |
| 20# | Φ219 × 38 | In stock |
| 20# | Φ219 × 40 | Limited — ask |
| 20# | Φ219 × 45 | Limited — ask |
| 20# | Φ219 × 60 | In stock |
| 20# | Φ219 × 65 | In stock |
| 20# | Φ224 × 22 | Limited — ask |
| 20# | Φ224 × 25 | Limited — ask |
| 20# | Φ224 × 35 | Limited — ask |
| 20# | Φ232 × 20 | In stock |
| 20# | Φ232 × 22 | In stock |
| 20# | Φ232 × 25 | Limited — ask |
| 20# | Φ232 × 35 | Limited — ask |
| 20# | Φ232 × 38 | Limited — ask |
| 20# | Φ232 × 40 | In stock |
| 20# | Φ232 × 41 | Limited — ask |
| 20# | Φ232 × 42 | Limited — ask |
| 20# | Φ232 × 45 | In stock |
| 20# | Φ232 × 50 | In stock |
| 20# | Φ232 × 55 | In stock |
| 20# | Φ232 × 60 | In stock |
| 20# | Φ232 × 65 | Limited — ask |
| 20# | Φ232 × 70 | In stock |
| 20# | Φ238 × 35 | Limited — ask |
| 20# | Φ238 × 40 | Limited — ask |
| 20# | Φ238 × 45 | Limited — ask |
| 20# | Φ238 × 60 | Limited — ask |
| 20# | Φ245 × 15 | In stock |
| 20# | Φ245 × 19 | Limited — ask |
| 20# | Φ245 × 21 | Limited — ask |
| 20# | Φ245 × 22 | Limited — ask |
| 20# | Φ245 × 25 | Limited — ask |
| 20# | Φ245 × 27 | Limited — ask |
| 20# | Φ245 × 28 | In stock |
| 20# | Φ245 × 30 | Limited — ask |
| 20# | Φ245 × 32 | In stock |
| 20# | Φ245 × 33 | Limited — ask |
| 20# | Φ245 × 35 | In stock |
| 20# | Φ245 × 36 | Limited — ask |
| 20# | Φ245 × 38 | In stock |
| 20# | Φ245 × 40 | In stock |
| 20# | Φ245 × 42 | Limited — ask |
| 20# | Φ245 × 45 | In stock |
| 20# | Φ245 × 50 | In stock |
| 20# | Φ245 × 55 | In stock |
| 20# | Φ245 × 60 | Limited — ask |
| 20# | Φ245 × 65 | In stock |
| 20# | Φ245 × 70 | Limited — ask |
| 20# | Φ245 × 75 | In stock |
| 20# | Φ254 × 22 | In stock |
| 20# | Φ254 × 30 | In stock |
| 20# | Φ254 × 32 | Limited — ask |
| 20# | Φ254 × 35 | In stock |
| 20# | Φ254 × 40 | In stock |
| 20# | Φ254 × 42 | Limited — ask |
| 20# | Φ254 × 45 | Limited — ask |
| 20# | Φ254 × 50 | Limited — ask |
| 20# | Φ254 × 60 | In stock |
Showing 120 of 1,740 size combinations · list updated 2026-08-22
This list reflects our sales stock and is refreshed periodically — it is a guide, not a real-time feed. Sizes marked “Limited” may still be enough for your job, and sizes not listed can often be sourced within days through our trading network. Send your size list and we'll confirm within 24 hours.
Grade guide
Chinese grades, international equivalents
Most of our stock is ordered against GB grades. Here's how the main ones compare to the standards you may be used to — equivalents are the closest common comparisons for sourcing, and we can supply mill certificates for exact chemistry.
20#
≈ ASTM A106 Gr.B · AISI 1020 · S20C
Low-carbon workhorse grade. Weldable, easy to machine and forgiving in fabrication, which is why it is the most stocked grade in our yard. Used where strength requirements are moderate but consistency and availability matter.
45#
≈ AISI 1045 · C45 · S45C
Medium-carbon grade that machines predictably and responds well to quench and temper. The default choice when a part needs more strength than 20# can give but does not justify an alloy grade.
42CrMo
≈ AISI 4140 · 42CrMo4 · SCM440
The chromium-molybdenum grade most heavy-duty machined parts are built from. As-rolled and quenched-and-tempered 42CrMo behave like two different materials — yield strength can differ by a factor of three — so the delivery condition matters more than the grade name.
27SiMn
The silicon-manganese grade Chinese cylinder builders standardise on. Higher strength than 20# or 45# at the same wall, with a grain structure that hones cleanly — which is why it dominates cylinder tube applications rather than general machining.
Q345B
≈ S355JR · A572 Gr.50
Low-alloy high-strength structural grade — the Chinese counterpart to S355. Where it becomes interesting is heat treatment: Q345B can be quenched and tempered up to Q420, Q460 and beyond, letting you buy one stocked grade and specify the strength you actually need.
12Cr1MoV
Cr-Mo-V grade for high-temperature service (power / boiler)
15CrMo
≈ ASTM A335 P12 · 13CrMo4-5
Chromium-molybdenum grade for elevated-temperature pressure service. The workhorse of boiler and refinery piping below the P22 range, with good weldability for field construction.
30CrMnSiA
A chromium-manganese-silicon grade used where strength-to-weight matters and 42CrMo is not quite enough. Common in aerospace-adjacent and high-load structural work; demands controlled heat treatment to reach its properties.
Real stock, real yard
Not a broker's list
Every line above sits in our own yard in Shandong. That's why we can cut, heat treat and bevel before shipment — and why a mixed-size container ships in days, not months.
Send your size list. Get availability in hours.
Grade, OD, wall, length, quantity — paste it straight into the form. Average response time: 3 hours.