Last updated: 6 November 2026.
Direct answer. A search of China's national standards register for 液压缸 returns 34 records: 16 in force, 18 superseded, and none mandatory. The current set is mostly seal-groove dimensions, two test-method standards, three marine cylinder standards, one tube standard and two guidance documents — no single standard defines a hydraulic cylinder for general industrial supply.
China's GB register lists 34 hydraulic-cylinder standards, 16 in force and none mandatory. What each one covers, and what your RFQ has to state instead.
A buyer asking a Chinese cylinder maker to "meet GB standards" has said almost nothing, because there is no GB standard for hydraulic cylinders as a product class. What exists is a set of part-level standards: how a seal groove is dimensioned, how a cylinder is tested, how a marine cylinder differs, and what tube the barrel may be made from. This page transcribes the register so you can see the shape of that set before you write a specification.
The full set below was retrieved on 6 November 2026 from the national standards register at `std.samr.gov.cn`, keyword 液压缸, page size 100 — the query reported `total = 34` and returned 34 rows, so the transcription is complete rather than truncated. Nothing on this page is a tolerance value, a pressure rating or a price; the register publishes none of those, and inventing them is how specifications go wrong.
| Measure | Count |
|---|---|
| Records returned | 34 |
| In force (现行) | 16 |
| Superseded (废止) | 18 |
| Mandatory (强制性) | 0 |
| Recommended (推荐性) | 32 |
| Guidance documents (指导性技术文件) | 2 |
Zero mandatory records is the finding that matters most for procurement. China does not require a hydraulic cylinder to carry a compulsory national standard mark; the compulsory system that does exist — CCC — is a separate catalogue and does not appear in this set. A supplier claiming "GB compulsory certification" for a cylinder is making a claim this register does not support.
Nine of the 16 current records exist to fix groove and housing dimensions for the seals inside a cylinder: `GB/T 6577-2021` for piston seals with a support ring, `GB/T 6578-2024` for the rod wiper groove, `GB/T 2879-2024` for single-acting rod and piston seal grooves, `GB/T 2880-1981` for narrow-section dynamic seal grooves, and the four-part `GB/T 15242` series for coaxial seals and support rings. That is a coherent message: the Chinese standard system regulates the interface between cylinder and seal far more tightly than it regulates the cylinder itself.
For a buyer this has one practical consequence. If your seal supplier and your cylinder supplier are different companies, the groove standard is the only shared language they have, and it is worth naming the exact part and year in the drawing — `GB/T 2879-2024`, not "GB/T 2879". The register shows why: `GB/T 2879` exists in this set as 1986 (superseded), 2005 (superseded) and 2024 (in force), and the groove dimensions are not interchangeable across those editions.
`GB/T 15622-2023` is the current cylinder test-method standard, replacing `GB/T 15622-2005` and, before it, `GB/T 15622-1995` — both superseded records sit in this register. `GB/T 32216-2015` covers test methods for proportional and servo-controlled cylinders, which is a different question: it addresses how a controlled cylinder is tested, not how a standard one is.
The same generational pattern runs through the seal standards: `GB/T 6578` in 1986 and 2008 are both withdrawn, with 2024 in force; `GB/T 15242` parts 1–4 were revised in two waves, parts 1 and 2 in 2017 and parts 3 and 4 in 2021, leaving the 1994 editions withdrawn. When a Chinese quotation cites a cylinder standard without a year, the year is the first thing to ask for.
Three current records describe complete cylinders rather than components: `GB/T 13342-2007` (general specification for marine reciprocating cylinders, replacing the 1992 edition), `GB/T 24946-2010` (marine digital cylinders) and `GB/T 37476-2019` (marine rotary-vane cylinders). All three are recommended standards, and all three are scoped to marine use.
That is the closest this register comes to "here is what a cylinder must be". A construction-equipment or machine-tool cylinder falls outside all three, which is why the specification has to be written by the buyer rather than inherited from a national standard.
`GB/T 43898-2024` specifies precision seamless steel tube for hydraulic cylinders used in construction machinery — a material standard for the barrel, effective 1 November 2024, and the newest substantive record in the set.
`GB/Z 44070-2024` is a guidance document on buckling-load assessment for cylinders, and `GB/Z 181.3-2026` is part 3 of a series on remanufacturing of hydraulic transmission components, covering cylinders. Both are 指导性技术文件 — guidance, not requirements — and both carry a blank "in force" field in the register. Read that literally: the register records their issue date and no effective date. Do not assume a date that is not printed.
Two further cautions about the register itself. It records Chinese titles only — the English glosses on this page are ours, and should not be quoted back as official translations. And the issue-date field does not always match the year inside the code: `GB/T 2880-1981` is recorded as issued 1982-01-21, and `GB/T 2879-1986` as issued 1981-12-31. Both are transcribed as the register prints them.
| Item | Why the register cannot supply it | What to state |
|---|---|---|
| Bore, rod diameter, stroke | No product standard defines a series | Exact millimetres, plus tolerance class |
| Rated and test pressure | Pressure series standard superseded | Numeric bar values and hold time |
| Seal interface | Groove standards fix dimensions, not the seal | Standard number and year, e.g. `GB/T 2879-2024` |
| Barrel material | Tube standard is scoped to construction machinery | Grade, condition, tube standard if applicable |
| Test regime | `GB/T 15622-2023` defines methods | Which clauses apply, and who witnesses |
| Marking and documents | Not covered | Nameplate content, test certificate, traceability |
Retrieved 6 November 2026; 34 rows, `total = 34`, no shortfall. Titles are as registered (Chinese); status and dates are register fields.
| # | Standard | Title as registered | Nature | Status | Issued | In force |
|---|---|---|---|---|---|---|
| 1 | GB/T 13342-2007 | 船用往复式液压缸通用技术条件 | 推荐性 | 现行 | 2007-07-17 | 2008-01-01 |
| 2 | GB/T 15242.1-2017 | 液压缸活塞和活塞杆动密封装置尺寸系列 第1部分：同轴密封件尺寸系列和公差 | 推荐性 | 现行 | 2017-11-01 | 2018-05-01 |
| 3 | GB/T 15242.2-2017 | 液压缸活塞和活塞杆动密封装置尺寸系列 第2部分：支承环尺寸系列和公差 | 推荐性 | 现行 | 2017-11-01 | 2018-05-01 |
| 4 | GB/T 15242.3-2021 | 液压缸活塞和活塞杆动密封装置尺寸系列 第3部分：同轴密封件沟槽尺寸系列和公差 | 推荐性 | 现行 | 2021-05-21 | 2021-12-01 |
| 5 | GB/T 15242.4-2021 | 液压缸活塞和活塞杆动密封装置尺寸系列 第4部分：支承环安装沟槽尺寸系列和公差 | 推荐性 | 现行 | 2021-05-21 | 2021-12-01 |
| 6 | GB/T 15622-2023 | 液压缸 试验方法 | 推荐性 | 现行 | 2023-11-27 | 2024-06-01 |
| 7 | GB/T 24946-2010 | 船用数字液压缸 | 推荐性 | 现行 | 2010-08-09 | 2010-12-01 |
| 8 | GB/T 2879-2024 | 液压传动 液压缸 往复运动活塞和活塞杆单向密封圈沟槽的尺寸和公差 | 推荐性 | 现行 | 2024-03-15 | 2024-10-01 |
| 9 | GB/T 2880-1981 | 液压缸活塞和活塞杆 窄断面动密封沟槽尺寸系列和公差 | 推荐性 | 现行 | 1982-01-21 | 1983-03-01 |
| 10 | GB/T 32216-2015 | 液压传动 比例/伺服控制液压缸的试验方法 | 推荐性 | 现行 | 2015-12-10 | 2017-01-01 |
| 11 | GB/T 37476-2019 | 船用摆动转角液压缸 | 推荐性 | 现行 | 2019-05-10 | 2019-12-01 |
| 12 | GB/T 43898-2024 | 工程机械液压缸用精密无缝钢管 | 推荐性 | 现行 | 2024-04-25 | 2024-11-01 |
| 13 | GB/T 6577-2021 | 液压缸活塞用带支承环密封沟槽型式、尺寸和公差 | 推荐性 | 现行 | 2021-05-21 | 2021-12-01 |
| 14 | GB/T 6578-2024 | 液压传动 液压缸 往复运动活塞杆防尘圈沟槽的尺寸和公差 | 推荐性 | 现行 | 2024-03-15 | 2024-10-01 |
| 15 | GB/Z 181.3-2026 | 液压传动 元件的再制造 第3部分：液压缸 | 指导性技术文件 | 现行 | 2026-07-30 | (blank) |
| 16 | GB/Z 44070-2024 | 液压缸 屈曲载荷评估方法 | 指导性技术文件 | 现行 | 2024-06-29 | (blank) |
| 17 | GB/T 13342-1992 | 船用往复式液压缸通用技术条件 | 推荐性 | 废止 | 1992-01-05 | 1992-10-01 |
| 18 | GB/T 14036-1993 | 液压缸活塞杆端带关节轴承耳环安装尺寸 | 推荐性 | 废止 | 1993-01-11 | 1993-10-01 |
| 19 | GB/T 14042-1993 | 液压缸活塞杆端柱销式耳环安装尺寸 | 推荐性 | 废止 | 1993-01-11 | 1993-10-01 |
| 20 | GB/T 15242.1-1994 | 液压缸活塞和活塞杆动密封装置用同轴密封件尺寸系列和公差 | 推荐性 | 废止 | 1994-10-17 | 1995-10-01 |
| 21 | GB/T 15242.2-1994 | 液压缸活塞和活塞杆动密封装置用支承环尺寸系列和公差 | 推荐性 | 废止 | 1994-10-17 | 1995-10-01 |
| 22 | GB/T 15242.3-1994 | 液压缸活塞和活塞杆动密封装置用同轴密封件安装沟槽尺寸系列和公差 | 推荐性 | 废止 | 1994-10-17 | 1995-10-01 |
| 23 | GB/T 15242.4-1994 | 液压缸活塞和活塞杆动密封装置用支承环安装沟槽尺寸系列和公差 | 推荐性 | 废止 | 1994-10-17 | 1995-10-01 |
| 24 | GB/T 15622-1995 | 液压缸试验方法 | 推荐性 | 废止 | 1995-07-12 | 1996-05-01 |
| 25 | GB/T 15622-2005 | 液压缸试验方法 | 推荐性 | 废止 | 2005-07-11 | 2006-01-01 |
| 26 | GB/T 25398-2010 | 农用挂车和牵引式机具 制动用液压缸 技术要求 | 推荐性 | 废止 | 2010-11-10 | 2011-03-01 |
| 27 | GB/T 2879-1986 | 液压缸活塞和活塞杆 动密封沟槽型式、尺寸和公差 | 推荐性 | 废止 | 1981-12-31 | 1987-05-01 |
| 28 | GB/T 2879-2005 | 液压缸活塞和活塞杆动密封 沟槽尺寸和公差 | 推荐性 | 废止 | 2005-07-11 | 2006-01-01 |
| 29 | GB/T 6577-1986 | 液压缸活塞用带支承环密封沟槽型式、尺寸和公差 | 推荐性 | 废止 | 1986-07-22 | 1987-05-01 |
| 30 | GB/T 6578-1986 | 液压缸活塞杆用防尘圈沟槽型式、尺寸和公差 | 推荐性 | 废止 | 1986-07-22 | 1987-05-01 |
| 31 | GB/T 6578-2008 | 液压缸活塞杆用防尘圈沟槽型式、尺寸和公差 | 推荐性 | 废止 | 2008-01-14 | 2008-05-01 |
| 32 | GB/T 7938-1987 | 液压缸及气缸公称压力系列 | 推荐性 | 废止 | 1987-06-12 | 1988-01-01 |
| 33 | GB/T 9094-1988 | 液压缸气缸 安装尺寸和安装型式代号 | 推荐性 | 废止 | 1988-04-25 | 1989-01-01 |
| 34 | GB/T 9094-2006 | 液压缸气缸安装尺寸和安装型式代号 | 推荐性 | 废止 | 2006-08-22 | 2007-01-01 |
No. The 34 records retrieved for 液压缸 contain no mandatory (强制性) standard; 32 are recommended and 2 are guidance documents. Compulsory certification is a separate system and does not appear in this set.
Name the part and the year. For rod and piston single-acting seals that is `GB/T 2879-2024`; for the rod wiper groove `GB/T 6578-2024`; for piston seals with a support ring `GB/T 6577-2021`; the `GB/T 15242` series covers coaxial seals and support rings. Earlier editions in the register are superseded and not interchangeable.
Yes — `GB/T 15622-2023` for general cylinders, replacing the 2005 and 1995 editions, and `GB/T 32216-2015` for proportional and servo-controlled cylinders.
No. `GB/T 13342-2007`, `GB/T 24946-2010` and `GB/T 37476-2019` are all scoped to marine applications, and all three are recommended rather than mandatory.
It lists `GB/Z 44070-2024` (buckling-load assessment) and `GB/Z 181.3-2026` (remanufacturing, part 3: cylinders) as guidance documents, both with no effective date recorded.
All sources retrieved 6 November 2026. This page is an independent reading of the sources listed; the official pages themselves are the specification.
| Fact used on this page | Source |
|---|---|
| S1 — 34 records for 液压缸 (`total = 34`), 16 in force, 18 superseded, 0 mandatory, 32 recommended, 2 guidance documents; all codes, titles, statuses and dates in the transcription table | National Standards Information Public Service Platform (SAMR), query run 6 November 2026 https://std.samr.gov.cn/gb/search/gbQueryPage |
| S2 — Seal-groove scope of GB/T 6577-2021, GB/T 6578-2024, GB/T 2879-2024, GB/T 2880-1981 and the GB/T 15242 series | SAMR register records, retrieved 6 November 2026 https://std.samr.gov.cn/gb/search/gbQueryPage |
| S3 — GB/T 15622-2023 test methods, with 2005 and 1995 editions superseded; GB/T 32216-2015 for proportional and servo cylinders | SAMR register records, retrieved 6 November 2026 https://std.samr.gov.cn/gb/search/gbQueryPage |
| S4 — Marine scope of GB/T 13342-2007, GB/T 24946-2010 and GB/T 37476-2019 | SAMR register records, retrieved 6 November 2026 https://std.samr.gov.cn/gb/search/gbQueryPage |
| S5 — GB/T 43898-2024 precision seamless steel tube for construction-machinery cylinders, in force 2024-11-01 | SAMR register record, retrieved 6 November 2026 https://std.samr.gov.cn/gb/search/gbQueryPage |
| S6 — GB/Z 44070-2024 and GB/Z 181.3-2026 as guidance documents with no effective date recorded | SAMR register records, retrieved 6 November 2026 https://std.samr.gov.cn/gb/search/gbQueryPage |
| S7 — GB/T 7938-1987 nominal pressure series recorded as superseded; no current record in the set carries that number | SAMR register record, retrieved 6 November 2026 https://std.samr.gov.cn/gb/search/gbQueryPage |