JIS G3452 SGP
TUSPIPE’s JIS G3452 SGP pipes are strictly certified to Japanese standards, possessing stable performance and excellent durability. They perform reliably in general fluid transport systems, providing you with safe and stable piping.
JIS G3452 SGP
JIS G3452 Grade SGP is a Japanese Industrial Standardized material that is often used in industrial applications. JIS G3452 SGP Galvanized Pipe is used to transmit steam, water, oil, gas, and air, among other things, at relatively moderate operating pressures.
タスパイプを選ぶ理由
1998年以来、天津聯合鋼管有限公司(TUSPIPE)は高品質のラインパイプの供給に尽力しています。
年間生産能力は50万トンを超え、石油・ガス開発、送電、船舶・自動車建造、水・電気、環境保護、機械工学、インフラ建設など、さまざまな分野・業界にサービスを提供している。
TUSPIPEは製品の品質を重視し、厳格な品質管理を行っている。製品の品質を維持するため、2004年から試験検査センターを設立しました。最新の試験・検査設備を備え、引張試験、水力試験、衝撃試験、DWTTなどを実施することができます。
Main Features and Applications of JIS G3452 SGP Pipe
- Used to transport water (not drinking water), air, steam, oil, and gas, as well as other fluids at relatively low pressures. Plastic-lined steel pipe manufactured by coating JIS G3452 SGP is used for water delivery pipelines (carbon steel pipe for ordinary piping)
- There are two distinct types: black pipe and white pipe. Temperature range of operation: -15 to 350°C.
- MZN grade groove corrosion-resistant ERW steel pipe is also available to defend against groove corrosion along ERW steel pipe welds.
Dimensions of steel JIS G3452 SGP pipes
| JIS G3452 寸法、重量および寸法公差 | |||||||
|---|---|---|---|---|---|---|---|
| 公称直径 | O.D. mm | 外径公差 | W.T. mm | W.T.公差 | Unit Mass excluding Socket kg/m | ||
| A | B | Pipes to be cut in taper thread | Other pipes | ||||
| 6 | 1/8 | 10.5 | ±0.5mm | ±0.5mm | 2 | +指定なし -12.50% | 0.419 |
| 8 | 1/4 | 13.8 | ±0.5mm | ±0.5mm | 2.3 | 0.652 | |
| 10 | 3/8 | 17.3 | ±0.5mm | ±0.5mm | 2.3 | 0.851 | |
| 15 | 1/2 | 21.7 | ±0.5mm | ±0.5mm | 2.8 | 1.31 | |
| 20 | 3/4 | 27.2 | ±0.5mm | ±0.5mm | 2.8 | 1.68 | |
| 25 | 1 | 34 | ±0.5mm | ±0.5mm | 3.2 | 2.43 | |
| 32 | 1 1/4 | 42.7 | ±0.5mm | ±0.5mm | 3.5 | 3.38 | |
| 40 | 1 1/2 | 48.6 | ±0.5mm | ±0.5mm | 3.5 | 3.89 | |
| 50 | 2 | 60.5 | ±0.5mm | ±1% | 3.8 | 5.31 | |
| 65 | 2 1/2 | 76.3 | ±0.7mm | ±1% | 4.2 | 7.47 | |
| 80 | 3 | 89.1 | ±0.8mm | ±1% | 4.2 | 8.79 | |
| 90 | 3 1/2 | 101.6 | ±0.8mm | ±1% | 4.2 | 10.1 | |
| 100 | 4 | 114.3 | ±0.8mm | ±1% | 4.5 | 12.2 | |
| 125 | 5 | 139.8 | ±0.8mm | ±1% | 4.5 | 15 | |
| 150 | 6 | 165.2 | ±0.8mm | ±1.6mm | 5 | 19.8 | |
| 175 | 7 | 190.7 | ±0.9mm | ±1.6mm | 5.3 | 24.2 | |
| 200 | 8 | 216.3 | ±1.0mm | ±0.8% | 5.8 | 30.1 | |
| 225 | 9 | 241.8 | ±1.2mm | ±0.8% | 6.2 | 36 | |
| 250 | 10 | 267.4 | ±1.3mm | ±0.8% | 6.6 | 42.4 | |
| 300 | 12 | 318.5 | ±1.5mm | ±0.8% | 6.9 | 53 | |
| 350 | 14 | 355.6 | - | ±0.8% | 7.9 | 67.7 | |
| 400 | 16 | 406.4 | - | ±0.8% | 7.9 | 77.6 | |
| 450 | 18 | 457.2 | - | ±0.8% | 7.9 | 87.5 | |
| 500 | 20 | 508 | - | ±0.8% | 7.9 | 97.4 | |
Chemical Composition of JIS G3452 SGP Pipe
| 鋼種 | P | S |
|---|---|---|
| エスジーピー | 0.040%max. | 0.040%max. |
Mechanical Composition of JIS G3452 SGP Pipe
| Letter symbol of grade | Tensile Test | ||
|---|---|---|---|
| Tensile Strength N /mm² | Elongation % | ||
| JIS G3452 No.11 and No.12 Test Pieces | JIS G3452 No.5Test Pieces | ||
| 縦型 | 横断 | ||
| JIS G3452 SGP | 30 {294} min. | 30 min. | 25 min. |
| Remarks 1. When the tensile test is carried out for No. 12 or No. 5 test piece for the pipe under 8 mm in wall thickness, the minimum value of elongation shall be obtained by subtracting 1.5 %from the values of elongation given in Table 3-1 for each 1 mm decrease in wall thickness, and rounding off to an integer by JIS z 840i. Examples of calculations are given in the referenced Table. 2. The values of elongation given in Table 3-1 shall not be applied to the pipe whose nominal size is32 A or smaller. However, the value of elongation shall be recorded. 3. In sampling the tensile test pieces， No.12 and No.5 test pieces shall be taken from the portion which does not involve welded seams. | |||
Manufacturing Method of JIS G3452 SGP Pipe
- The manufacturing process of JIS G3452 SGP pipes begins with either electric resistance welding or butt welding. Once the pipes have been created, they are delivered as is. However, the cold-finished pipes go through an additional step of being annealed after manufacturing. This annealing helps to improve the strength and ductility of the pipes, making them less susceptible to fracture.
- Both ends of pipes of nominal diameter 300A or under must be threaded or plain-ended. This is to ensure that the pipes can be securely connected to other pipes or fixtures. Similarly, for pipes of nominal diameter 350A or over, only plain-ended connections are allowed. This is to prevent leaks and other potential problems that could occur with threaded connections. Finally, when specified by the buyer, pipes may be furnished with bevel ends. This allows for a more secure connection and also provides a nicer appearance.
- For threaded pipes, taper threads specified in JIS B 0203 shall be applied on both ends. A socket as in JIS B 2301 or JIS B 2302 shall be screwed into one end of the threads. The other end with a socket not screwed shall be provided with a thread protecting ring or protected by other suitable means. When specified by the purchaser, the threaded pipe may dispense with a socket. The taper threads shall be inspected in accordance with JIS B 0253.
- Before threading white pipes, the pipes and sockets shall be zinc-coated. In this case, black pipes and sockets that passed the inspection shall be thoroughly cleaned by sand blasting, pickling, etc., then zinc-coated by hot dip galvanized coating. Zinc used for zinc-coating shall be the distilled zinc ingot Class 1 specified in JIS H 2107 or zinc ingot at least equivalent thereto. Other general matters of zinc-coating shall be in accordance with JIS H 8641. This is to ensure that all pipes are protected against corrosion and wear.
JIS G3452 SGP Pipe Hydrostatic Test or Nondestructive Test
JIS G3452 chapter 10.6 shall be used to test the SGP black pipe, and the resultant hydrostatic or nondestructive characteristic shall conform to one of the following two. Whichever of them is preferred shall be determined by the purchaser’s specification or at the manufacturer’s discretion.
Hydrostatic property (Applicable till the end of 1990) When 25 kgf/P 25 bar (1) hydrostatic pressure is applied, the black pipe must endure it without leaking.
Note (1) 1 bar = 105Pa
