Which types of scaffolding pipe Youfa supplied

Scaffolding Pipes Standards

Scaffolding pipe standards vary by country, though there is a strong trend towards international harmonization, particularly with the European standard.

Country / Region	Primary Standards	Common Steel Grade	Scaffolding Steel Tube OD (mm)
International / EU	EN 39	S235, S355	48.3
United Kingdom	EN 39, BS1139	S235, S355	48.3
USA	ASTM A500	Grade B, Grade C	48.3 (also 42.4, 60.3)
Australia / NZ	AS/NZS 1576	S235, S355	48.3
Russia	GOST 27321	STK400, STK500	48.6
China	GB/T 3091, JGJ 130	Q235, Q355	48.3

Scaffolding Pipes Standards EN 39

Key Specifications:

Tube OD: 48.3 mm is the universal standard.

Steel Grade: S355 (Minimum Yield Strength of 355 MPa) is the modern standard. Older S235 and S275 grades are being phased out.

Couplers: EN 74-1 defines the requirements for couplers and center poles.

Scaffolding Pipes Standards BS1139

Key Specifications:

Tube OD: 48.3 mm (± 0.5 mm)

Steel Grade: S235JR.

Scaffolding Tubes Standards ASTM A500

Material Standard: ASTM A500 for cold-formed steel tubing

Tube OD: 48.3 mm (1.9 inches) is most common, but other sizes like 42.4 mm (1-5/8") for light-duty and 60.3 mm (2-1/2") for heavy-duty systems are also used.

Steel Grade: Grade B (Yield Strength 290 MPa / 42 ksi); Grade C (Yield Strength 330 MPa / 46 ksi)

Australia and New Zealand Scaffolding Tubes Standards AS/NZS 1576

Main Standard: AS/NZS 1576: Scaffolding. This is a multi-part standard:

AS/NZS 1576.1: General requirements

AS/NZS 1576.2: Couplers and accessories

AS/NZS 1576.3: Prefabricated scaffolding

...and other parts for specific types (suspended, timber, etc.)

Tube OD: 48.3 mm is standard.

Steel Grade: Typically a grade with a yield strength of ~350 MPa, equivalent to S355.

Russia Scaffolding Tubes Standards GOST 27321

GOST 27321 is a technical standard for scaffolding used in construction and maintenance projects in Russia, with the latest version released in 2023. This standard provides detailed requirements for the design, materials, manufacturing, inspection, and use of scaffolding, aiming to ensure the safety and reliability of scaffolding in construction maintenance projects.

Tube OD: 48.6 mm is standard.

Steel Grade: STK500 ( The yield strength must be at least 355 MPa, the tensile strength must be at least 620 MPa, and the elongation at break must not exceed 21%. )