pultrx | Fiberglass tubes Product: https://pultrx.com/frp-profiles/fiberglass-tubes Updated: 2026-11-07 Contact: inquiry@pultrx.com Fiberglass tubes are hollow glass fiber reinforced polymer sections, also called glass fibre or GRP tubes. The manufacturer lists round, square, rectangular and oval forms. Choose a section by its dimensions and service requirements, then request the material specification and inspection evidence for the quoted product. Manufacturer: Henan Zhongsheng Composite Material Co., Ltd. Manufacturer’s export trading company: pultrx, Shanghai, China Catalogue figures are references, not a binding offer. Confirm the configuration, inclusions and acceptance criteria in the written quotation. CONFIGURATIONS Configuration SPECIFICATIONS Dimension convention: Configuration = Round: outside diameter × wall; box: width × height × wall. State mm or inches. Rectangular tube catalogue dimensions: Configuration = Width 25–100 mm; wall 3–6 mm; length 1,000–6,000 mm (The second cross-section dimension is absent. These ranges do not define a complete rectangular section or SKU.) Listed rectangular-tube resin options: Configuration = Isophthalic polyester, vinyl ester or polyurethane; specify the quoted formulation Listed rectangular-tube appearance options: Configuration = Custom color; smooth or textured surface PRODUCT REQUIREMENTS For structural pultruded profiles, specify EN 13706-2 test methods and general requirements, together with the required E17 or E23 grade under EN 13706-3. The quotation defines the agreed grade, dimensional tolerances and supporting test reports for the ordered profile. PRODUCT PHOTOGRAPHS - Round fiberglass tubes. Specify outside diameter, wall thickness and cut length. Image: https://pultrx.com/images/frp-profiles/fiberglass-round-tubes.webp - Octagonal tube example. Identify the outside envelope, bore, wall and mating components. Image: https://pultrx.com/images/frp-profiles/octagonal-fiberglass-tube.webp - Divided rectangular section. Identify both the external envelope and the internal cell dimensions. Image: https://pultrx.com/images/frp-profiles/divided-rectangular-fiberglass-tube.webp - Three-cell hollow section. Confirm the number of cells, web positions and wall dimensions before quotation. Image: https://pultrx.com/images/frp-profiles/three-cell-fiberglass-tube.webp SELECTION - Define the bore: Show internal clearance and mating inserts as well as outside dimensions. Specify which faces control assembly fit. - Describe the service: State exposure, temperature and loading. Ask for evidence supporting any chemical, electrical or structural requirement. Specify tube fit, structural duty and service separately Identify internal and external chemical contact, concentrations, temperature and exposure duration. Link the supplier material proposal to the tube drawing; hollow geometry does not establish chemical suitability. Select a tube material for its service environment (/guides/frp-resin-selection) | Requirement | What to define | | --- | --- | | Outside fit | Outside diameter or width × height, corner geometry, straightness and the surfaces that mate with another part. | | Bore or insert fit | Inside dimensions, insertion length, wall requirements and the critical fit checks on a controlled drawing. | | Structural use | Loads, support and connection arrangement, service environment and the material evidence required by the project designer. | | Pressure service | State the pressure, fluid and operating conditions explicitly. A structural tube listing does not establish a pressure-pipe rating. | Strongwell’s structural-shape guide distinguishes structural tubing from pressure pipe and explains the directional behavior of pultruded profiles. Use that distinction to define the enquiry, not to assign its product properties to another manufacturer. The Zhongsheng rectangular-tube page omits one cross-section dimension, so its published ranges cannot identify a complete section. Obtain the complete drawing, proposed material and relevant inspection or test evidence before accepting a substitute. Record each tube size, cut length, quantity, drawing revision and fit requirement. Prepare a fiberglass tube order schedule (/guides/frp-profile-rfq-checklist) TECHNICAL REFERENCES - Strongwell: introduction to EXTREN structural shapes: https://www.strongwell.com/wp-content/uploads/2015/05/Introduction-To-Extren.pdf — Supports general distinctions between directional structural properties, deflection and pressure service. EXTREN data are not ratings for the products offered here. External references explain selection principles; they do not qualify the offered product or transfer another manufacturer's ratings. PRODUCT FORMS AND CATALOGUE EXAMPLES - Round tubes - Square tubes - Rectangular tubes: published width 25–100 mm; second side requires confirmation - Oval tubes APPLICATIONS TO REVIEW - Tool-handle components - Railing components subject to project design PROCESS TO REVIEW - Review the drawing: Agree bore, wall, length and critical tolerances. - Confirm the offer: Identify material, finish, quantities and any machining. - Approve sample checks: Agree wall measurements and a fit check before production release. - Review shipment records: Match lot identification, inspection results and packing quantities. CORE SCOPE TO SPECIFY - Profile quantities, dimensions and cut lengths identified in the accepted quotation - Packaging, lot identification and inspection documents as agreed OPTIONS AND SERVICES TO PRICE SEPARATELY - Special machining, project testing and samples: confirm charges - Freight and any custom tooling: itemize if required RFQ INPUTS — complete these before requesting a quotation - Section drawing and dimensional units - Cut lengths and quantities by size - Resin or service-environment requirements - Connection details and any drilled holes - Color, finish and sample requirements - Delivery destination and required date ACCEPTANCE EVIDENCE TO AGREE - Measure outside size, bore and wall at agreed locations. - Check cut length, ends and specified hole positions. - Inspect surface condition and test fit nominated inserts. - Reconcile lot labels, quantities and agreed reports. COMMERCIAL ITEMS TO CONFIRM Applicable performance and destination requirements; lead time in working days; payment milestones; warranty party, term and exclusions; packing, Incoterm and delivery destination. For equipment, include plant power and spare parts. QUESTIONS Are these pressure-rated pipes? No pressure rating is established by this category. Provide pressure-service requirements and request a specific qualified proposal. Are all sizes in stock? Availability is not confirmed. The quotation should state the offered section, minimum quantity and production lead time. RELATED RESOURCES How to cut, drill and join fiberglass tube and rod: https://pultrx.com/guides/how-to-cut-drill-and-join-fiberglass FRP profile RFQ checklist and order schedule: https://pultrx.com/guides/frp-profile-rfq-checklist Compare solid fiberglass rods: https://pultrx.com/frp-profiles/fiberglass-rods Explore structural sections: https://pultrx.com/frp-profiles/structural-profiles Request a profile quotation: https://pultrx.com/contact?interest=frp-profile&product=Fiberglass%20tubes Visit our factory: https://pultrx.com/manufacturing-partner Read the FRP products catalog: https://pultrx.com/resources/frp-products-catalog Prepare an enquiry: https://pultrx.com/contact?interest=frp-profile&product=Fiberglass%20tubes