Stkm15a

Updated July 3, 2026

Overview

Product sourcing insights & recommendations

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STKM15A is a high-grade JIS G3445 carbon steel tube specifically engineered for machine structural purposes. It is distinguished by its precise balance of carbon (0.25–0.35%) and manganese (0.30–1.00%), which grants it a high tensile strength of ≥ 470 MPa and excellent durability for automotive and industrial machinery components Steeltube.

The market for these tubes is projected to grow significantly, with a CAGR of 7.82% through 2032, driven by a global surge in infrastructure and over 200,000 km of planned oil and gas pipelines Maximizemarketresearch. The Asia-Pacific region currently dominates this sector, particularly for seamless round tubes, which represent the majority of high-pressure application usage.

I have compiled the full technical specifications, growth drivers, and a list of 20+ verified suppliers specializing in JIS G3445 standards with customization capabilities in the files below.

I've detailed the STKM15A specs and market outlook for you. You can explore further by:

Stkm15a Carbon Steel Tube Jis G3445

Products · Top picks & verified manufacturers

ASTM A513 /A519 1020 DOM SEAMLESS STEEL TUBE/CARBON STEEL TUBES

$700-1,0004.8(680)

MOQ: 5 metric tons

JIS G3445≤7h response time

Shanghai Unite Steel Trading Co., Ltd.🇨🇳CN16 yrs

Carbon Steel Welded Pipes for Oil & Drill Pipe Applications API Pipe JIS G3444 Standard OD21.7-216.3mm X WT2.0-6.0mm

$600-6504.5(832)

MOQ: 10 tons

Shandong Liaocheng Jiuyang Steel Pipe Manufacturing Co., Ltd.verified🇨🇳CN3 yrs

Factory supply Competitive Price High Precision JIS G3466 STKR400 STKR490 STKR540 rectangular Carbon Steel Tube Pipe

$400-5505.0(328)

MOQ: 5 tons

Shandong Hongzhi Metal Product Co., Ltd.verified🇨🇳CN2 yrs

15CrMoG E355 St35.8 ND Carbon Steel Pipe Seamless ASTM A213 GR9T91 Round Boiler Tube

$530-5805.0(93)

MOQ: 1 ton

100+ store reviews40% reorder rate≤2h response time

Liaocheng Jiujiang Machinery Manufacturing Co., Ltd.verified🇨🇳CN8 yrs

JIS G345 Stpg370 Sch 40 4" 16" Carbon Steel Pipe Per Meter

$930-1,0005.0(748)

MOQ: 1 ton

75% reorder rate≤1h response time

Shandong Kai Steel Import And Export Co., Ltd.verified🇨🇳CN8 yrs

ASTM A519 Seamless Carbon Steel Pipe Precision Hydraulic Tube for Mechanical Engineering

$450-4794.9(461)

MOQ: 2000 tons

Shandong Carbon Steel Metal Products Co., Ltd.verified🇨🇳CN5 yrs

Deep Dive · Full Report

Full Market Report

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Sources & References

20 sources cited · Verified industry data & reports

Precision seamless steel tubes standard JIS G3445 STKM15A

steeltube.sk

Basic parameters ; STKM15A · Galvanized zinc coated | Galvanized zinc coated plus polyester coating | Phosphated | Without coating · 15.9 x 1.2 - 114.3 x 9.5 mm.

STKM15A (JIS): Properties, Composition, and Best Uses

Total Materia

Find in-depth details on STKM15A in JIS: exact chemical makeup, physical and thermal properties, strength ratings, and ideal applications.

STKM15A Chemical composition, standards and properties

SteelJIS

Grade : STKM15A ; Classification: Structural steel Carbon steel ; Standards: JIS G 3445 : Carbon steel tubes for machine structure ; Applications: Carbon steel ...

Carbon Steel Market | Global Market Analysis Report - 2036

Future Market Insights

The market is forecast to expand at a CAGR of 4.0% from 2026 to 2036. Low-carbon steel remains the leading grade family with a 58.4% market share. Flat products ...

STKM15A - JIS G 3445-2021

H2ABC

STKM15A. Corresponding Standard, JIS G 3445-2021. Carbon Steel Tubes for Machine Structure. Classification, Carbon Steel. STKM15A Chemical Element Composition ...

Steel Pipes And Tubes Market Size Report, 2026-2033

Grand View Research

Steel pipes & tubes market size was valued at $137.6B in 2025 and is projected to grow from $139.3B in 2026 to $209.9B by 2033, at a CAGR of 6.0%