pultrx | Fiberglass round tube Product: https://pultrx.com/frp-profiles/fiberglass-round-tube Updated: 2026-10-22 Contact: inquiry@pultrx.com A fiberglass round tube is a hollow circular glass fiber reinforced polymer section. Also called a glass fibre or GRP tube, it needs an outside diameter and a defined wall or bore to identify its cross-section. For handles, sleeves and assembly components, specify the interface that controls fit before choosing the nominal diameter. Product family: https://pultrx.com/frp-profiles/fiberglass-tubes Manufacturer: Henan Zhongsheng Composite Material Co., Ltd. Export partner: pultrx, Shanghai, China Catalogue figures are references, not a binding offer. Confirm the configuration, inclusions and acceptance criteria in the written quotation. TBD means not confirmed, never zero. CONFIGURATIONS Configuration SPECIFICATIONS Drawing convention: Configuration = Outside diameter × wall × cut length; specify bore where fit is critical Available diameter and wall: Configuration = TBD — ask factory (Published wall ranges conflict; obtain a drawing-specific offer.) Roundness, straightness and bore tolerances: Configuration = TBD — ask factory Material properties and test method: Configuration = TBD — ask factory Minimum quantity and production lead time: Configuration = TBD — ask factory SOURCE Henan Zhongsheng — round tube catalogue: https://www.frpzs.com/FRP-Profiles/Fiberglass-Tube/Fiberglass-round-tube.html Manufacturer page reviewed 2026-10-22. Circular product form is supported; dimensional ranges and operating claims are not adopted. SELECTION - Choose the controlling diameter: An external clamp controls outside fit; a plug or sleeve controls the bore. Identify both mating parts and tell the manufacturer which interface has priority if the proposed wall changes. - Describe insertion depth: An insert that enters the cut end may still bind farther along the tube. State the engagement length and agree a representative fit check over that distance. - Separate tube duty from pipe duty: This listing establishes no pressure rating. Fluid pressure, leak tightness and joint qualification need a separate documented proposal; a circular appearance alone cannot establish suitability. Turn a nominal diameter into an inspectable order | Interface | Drawing and acceptance requirement | | --- | --- | | Outside clamp | Specify diameter, measurement locations and allowable roundness variation. | | Internal insert | Show bore clearance, engagement length and the actual mating-part revision. | | Cut end | Identify end squareness, edge finish and any cap or bonded attachment. | | Long assembly | Agree straightness measurement and support conditions for inspection. | For an ideal concentric circular section, bore diameter equals outside diameter minus twice the wall. Use that relationship to check a drawing for consistency, not to replace bore inspection: actual wall variation and roundness affect assembly fit. The manufacturer page contains conflicting wall ranges, so no catalogue envelope is offered here as a validated capability. TECHNICAL REFERENCES - Henan Zhongsheng round tube product reference: https://www.frpzs.com/FRP-Profiles/Fiberglass-Tube/Fiberglass-round-tube.html — Product-form evidence only; catalogue performance and conflicting dimensional claims are excluded. External references explain selection principles; they do not qualify the offered product or transfer another manufacturer's ratings. PRODUCT FORMS AND CATALOGUE EXAMPLES - Circular hollow section to an accepted drawing APPLICATIONS TO REVIEW - Tool-handle components - Railing components subject to project design PROCESS TO REVIEW - Submit the mating detail: Provide tube and insert drawings, units, quantities and required engagement. - Resolve the technical offer: Agree material, dimensional priorities, finish and any secondary work. - Approve a fit sample: Record the sample revision and inspection method before production release. - Release the shipment: Match measured lots and packing quantities to the accepted order. CORE SCOPE TO SPECIFY - Finished tubes in the sizes, quantities and cut lengths accepted in the quotation - Agreed lot labels, packaging and dimensional inspection records OPTIONS AND SERVICES TO PRICE SEPARATELY - Insert machining, drilled holes, samples and application testing - Custom tooling and freight where required RFQ INPUTS — complete these before requesting a quotation - Outside diameter, wall and critical bore dimension - Insert drawing and engagement length - Cut lengths, quantities and end treatment - Exposure, loading and required material evidence - Destination, packing constraints and requested delivery date ACCEPTANCE EVIDENCE TO AGREE - Measure diameter and wall at agreed stations around the circumference. - Verify bore fit over the specified insertion distance. - Check straightness, cut length and end condition. - Match lot identification to inspection records and quantities. 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 Can I order by outside diameter alone? Include wall or bore as well. The same outside diameter can describe different hollow sections and different insert clearances. Can this replace a same-size metal tube? Matching geometry does not establish matching strength, stiffness or connection behavior. Obtain product-specific evidence and have the application reviewed before substitution. RELATED RESOURCES Compare all fiberglass tube forms: https://pultrx.com/frp-profiles/fiberglass-tubes Compare fiberglass square tube: https://pultrx.com/frp-profiles/fiberglass-square-tube Compare fiberglass rectangular tube: https://pultrx.com/frp-profiles/fiberglass-rectangular-tube Prepare a finished-profile RFQ: https://pultrx.com/guides/frp-profile-rfq-checklist Review the manufacturer and plan a factory audit: https://pultrx.com/manufacturing-partner Prepare an enquiry: https://pultrx.com/contact?interest=frp-profile&product=Fiberglass%20round%20tube