GB/T 29737 Cold Formed Q355B/Q235B U & Z Type Steel Sheet Pile

Short Description:

Cold-formed sheet piles are widely used in river embankments, seawalls, bridges and urban excavation projects. They are available in U-type, Z-type, and other interlocking profiles.

Brand Name: CHINA ROYAL STEEL

Steel Grade: Q235B Q355B

Production standard: GB

Certificates: ISO9001, BV, CE

Payment Term: 30%TT+70%

MOQ: 10 TON

Delivery Time: 7-15 Days

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Product Detail

Product Tags

Product Detail

Feature	Specification
Standard	GB/T 29737
Grade	Q235B / Q345B
Type	U-Type / Z-Type / Larssen Sheet Piles
Manufacturing	Cold-Formed Steel Sheet Pile
Length	6m – 18m (Custom Length Available)
Width	200mm – 900mm (Depending on Profile)
Thickness	4mm – 12mm
Surface	Mill Finish / Coated / Galvanized
Ready Stock	1000+ Tons Available
Exported To	Southeast Asia / Middle East / America
Delivery	Factory Direct Price, 7–15 Days

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Q235B/Q355B Steel Sheet Pile Chemical Composition

Grade	C	Mn	P	S	Si
Q235B	≤0.22	≤1.40	≤0.035	≤0.035	≤0.35
Q345B	≤0.20	1.00–1.60	≤0.035	≤0.035	≤0.50

Q235B/Q355B Steel Sheet Pile Mechanical Properties

Grade	Yield Strength (MPa)	Tensile Strength (MPa)	Elongation (%)
Q235B	≥235	375 – 500	≥26
Q345B	≥345	470 – 630	≥21

Notes:

Yield Strength ReH = Yield Strength

Tensile Strength Rm = Tensile Strength

Elongation A = Elongation (percentage elongation after fracture)

Q235B/Q355B Steel Sheet Pile Size

Section	Width	Height	Thickness		Cross Sectional Area	Weight		Elastic Section Modulus	Moment of Inertia	Coating Area (both sides per pile)
	(w)	(h)	Flange (tf)	Web (tw)	Cross Sectional Area	Per Pile	Per Wall	Elastic Section Modulus	Moment of Inertia	Coating Area (both sides per pile)
	mm	mm	mm	mm	cm2/m	kg/m	kg/m2	cm3/m	cm4/m	m2/m
Type II	400	200	10.5	-	152.9	48	120	874	8,740	1.33
Type III	400	250	13	-	191.1	60	150	1,340	16,800	1.44
Type IIIA	400	300	13.1	-	186	58.4	146	1,520	22,800	1.44
Type IV	400	340	15.5	-	242	76.1	190	2,270	38,600	1.61
Type VL	500	400	24.3	-	267.5	105	210	3,150	63,000	1.75
Type IIw	600	260	10.3	-	131.2	61.8	103	1,000	13,000	1.77
Type IIIw	600	360	13.4	-	173.2	81.6	136	1,800	32,400	1.9
Type IVw	600	420	18	-	225.5	106	177	2,700	56,700	1.99
Type VIL	500	450	27.6	-	305.7	120	240	3,820	86,000	1.82

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Q235B/Q355B Steel Sheet Pile Locking and waterproof performance

Design: Interlocking Steel Sheet Pile, permeability ≤1×10⁻⁷ cm/s

Americas: Meets ASTM D5887 Standard for a Liner to Reduce Seepage Under Drums

Southeast Asia: Groundwater-seepage proof for tropical rainy seasons

Q235B/Q355B Steel Sheet Pile Production process

1.Raw Material Selection – High-quality steel strips with stable chemical composition are chosen.

2.Cold Forming – Steel strips are precisely bent and rolled into U-type, Z-type, or Larssen profiles at room temperature.

3.Straightening & Cutting – Piles are straightened and cut to required lengths with accurate tolerances.

4.Surface Treatment – Mill finish, galvanized, or coated options are applied for corrosion resistance.

5.Quality Inspection – Chemical composition, mechanical properties, and dimensional accuracy are checked.

6.Packaging & Delivery – Bundled securely and shipped to global destinations.

Q235B/Q355B Steel Sheet Pile Surface

Americas:HDG as ASTM A123 (min zinc coat ≥ 85 µm); 3PE coating is optional; all finishes RoHS compliant.

Southeast Asia:The thickness of hot dip galvanized is hollyh (over 100μm), and two layers of epoxy coal tar coating are applied, it can be salt sprayed tested for 5000 hours without rust, is the best for tropical marine environment use.

APPLICATION

1.Harbor Building Steel Pile: Application for port, dock and quay wall construction, superb strength for structural support and durable service-life in the marine environment.

2.River Defense Steel Pile: Engineered to reinforce foundation of riverbanks, treat soil erosion and shield against the impact of river flow and river flooding.

3.Bridge Foundation Steel Pile: Suitable for use in bridge foundation construction to obtain deep foundation and structural stability under heavy structural gain.

4.Underground Facility Steel Pile: Used in basements, tunnels and underground buildings for dependable soil retention and excavation support.