screwed tee & barred tee & threaded cap for pipeline | Wholesale

🔧 Screwed Tee: Technical Specifications & Applications

The screwed tee — also called a threaded tee — is the workhorse of branch connections in low-to-mid pressure piping. It provides a 90-degree branch from a straight run, as referenced in the Standard Tee Fitting Branch Flow Engineering Principles guide: "A standard tee has three openings of the same size in a 'T' shape, allowing a 90-degree branch to be taken from a straight run." Our screwed tees are manufactured from malleable cast iron (MCI) per ASTM A197, ensuring ductility and pressure integrity.

🛡️ Barred Tee: Design, Standards & Use Cases

A barred tee — sometimes called a "pig bar tee" — is a specialized tee fitting with an integral stop bar welded across the branch opening. Its function: prevent pipeline inspection gauges (pigs) or cleaning tools from accidentally entering the branch line while allowing fluid flow. This fitting is indispensable in oil & gas transmission, refinery, and pipeline pigging operations where maintaining a clean, obstruction-free main line is critical.

🏗️ Application note: Barred tees also reduce operational risk in multi-product batch pipelines, preventing cross-contamination between different fluids during pigging cycles.

🔒 Threaded Cap: Pressure Ratings & Material Options

The threaded cap is the unsung hero of system integrity — sealing the end of a pipe to provide future tie-in capability or permanent system termination. Our threaded caps are precision-machined to ensure a leak-tight seal under both positive pressure and vacuum conditions. When selecting caps, matching the thread form (NPT vs BSPT) with the pipe is non-negotiable for pressure retention.

Powerful Factory Integration

Direct access to casting, threading, galvanizing, and testing lines under one roof — no middlemen, tighter tolerances, 100% traceability.

Certified Quality Assurance

ISO 9001:2015 certified processes. Every batch undergoes hydrostatic testing, torque verification, and dimensional inspection per ASME B16.11.

OEM/ODM Design

Custom branding, packaging, thread types, and material specifications. Your private label, your packaging — our engineering muscle.

High-Speed Delivery

20,000+ sqm warehouse, 300+ SKUs in stock. Typical expedited shipping: 15–25 days to US ports, 20–30 days to Europe.

• 🔥 UL/FM — Fire protection fittings (on request)

• 🧪 NSF/ANSI 61 — Drinking water system components

• ⚙️ NACE MR0175 — Sour service (on request)

• 📋 Full MTR / EN 10204 3.1 — Batch traceability

• 🌐 REACH & RoHS — EU chemical compliance

"We switched our entire HVAC branch-line inventory to Weihuan's screwed tees. The NPT threading is consistently clean — no leaks across 5,000+ joints. We reduced fittings spend by 31% annually."

David Keller

Senior Procurement Manager, US HVAC Distributor

"The barred tees we ordered for our pipeline pigging station met every spec we tested — dimensional accuracy was within 0.5mm. Their team caught a thread spec conflict before production. Excellent engineering support."

Marta Schäfer

Technical Director, German Pipeline Engineering

"Threaded caps arrive with clean, fully protected threads and proper packaging. We order over 10,000 units per quarter — inventory lead time dropped from 9 weeks to 3. Saved $120k in expedited freight."

James O'Connor

Operations Manager, Irish Water Treatment

"As an OEM, we needed custom-branded malleable iron fittings with specific packaging. Weihuan handled the full ODM process — from die design to sea freight. Their response speed is genuinely impressive."

Pieter van Dijk

Supply Chain Director, Netherlands Fittings Brand

Q: What is your MOQ for wholesale screwed tee and threaded cap orders?

For standard sizes (1/2" to 2"), the MOQ is 500 pieces per SKU. For mixed-size orders or custom OEM branding, we can offer a reduced MOQ of 200 pieces per size as an introductory package. We also support sample orders (20–50 pcs) for pre-qualification testing at a nominal cost, credited back on first bulk order.

Q: How do you handle NPT vs BSPT threading — can I mix both in one container?

Absolutely. We keep NPT and BSPT/BSPP tooling permanently installed on separate CNC threaders. This means you can order 60% NPT and 40% BSPT in a single container with zero cross-contamination risk. Every carton is labeled with thread standard, batch code, and heat number for full traceability.

Q: What are the typical shipping costs and Incoterms for US/Europe delivery?

We quote under FOB Tianjin/Xingang, CIF, or DDP depending on your customs clearance capability. For a 40HQ container of mixed fittings (~25 tons), sea freight to Houston or Rotterdam currently ranges $4,500–$7,800 depending on season. We also provide freight consolidation with other pipe fittings to optimize your landed cost per unit.

Q: Can you match specific paint/color codes for our OEM fittings?

Yes. We offer custom color coding: blue (gas), green (water), red (fire sprinkler), yellow (industrial), and RAL-matched finishes. We use epoxy powder coating for superior durability and UV resistance — no more faded identification paint on your job site.

Q: What after-sales warranty do you offer on barred tee fittings?

Every barred tee we ship carries a 24-month material and workmanship warranty against defects in casting, welding, threading, and coating. In the unlikely event of failure, we provide replacement cost credit or refund the purchase price — your choice. Our engineering team is available 6 days a week for installation troubleshooting.

Q: How do you manage quality inspection before shipment?

We follow a 3-stage QC protocol: (1) In-process dimensional checks every 2 hours using calibrated thread GO/NO-GO gauges; (2) 100% hydrostatic pressure testing on critical parts; (3) Pre-shipment AQL sampling per ISO 2859-1, with the option of third-party inspection (SGS, BV, TÜV) at your cost. We also provide unedited video inspections upon request.

📱 US buyer — order tracking & documents

📱 EU distributor — pricing & MOQ discussion

📱 Canada buyer — QC photos & inspection report