Manufacturing since 1976
Nearly fifty years producing industrial fittings from our Taipei base — process maturity you can rely on for repeat orders.
Sunze manufactures SS304 threaded pipe fittings for distributors and OEM buyers worldwide — tees, nipples, elbows, sockets and unions, produced under ISO 9001 and shipped to 30+ countries.
Send your product, size and quantity requirements. Our export team replies with pricing within 24 business hours.
Thank you. Our export team will reply to your email within 24 business hours.
Every fitting is cast and machined in SS304 stainless steel with female BSP or NPT threading. Full dimension and weight tables available on request.
Full dimension and weight tables for each fitting in SS304. All sizes available with female BSP or NPT threading. Need a size not listed? Request a quote.
DN8 – DN50 · 1/4" – 2" · BSP / NPT
| Size | DN | W. kgs |
|---|---|---|
| 1/4" | 8 | 0.0625 |
| 3/8" | 10 | 0.08 |
| 1/2" | 15 | 0.106 |
| 3/4" | 20 | 0.1625 |
| 1" | 25 | 0.2715 |
| 1-1/4" | 32 | 0.4045 |
| 1-1/2" | 40 | 0.5745 |
| 2" | 50 | 0.925 |
DN6 – DN150 · 1/8" – 6" · BSP / NPT
| Size | DN | L (mm) |
|---|---|---|
| 1/8" | 6 | 40 / 60 / 80 / 100 / 120 / 150 / 180 / 200 / 250 / 300 |
| 1/4" | 8 | 40 / 60 / 80 / 100 / 120 / 150 / 180 / 200 / 250 / 300 |
| 3/8" | 10 | 40 / 60 / 80 / 100 / 120 / 150 / 180 / 200 / 250 / 300 |
| 1/2" | 15 | 60 / 80 / 100 / 120 / 150 / 180 / 200 / 250 / 300 |
| 3/4" | 20 | 60 / 80 / 100 / 120 / 150 / 180 / 200 / 250 / 300 |
| 1" | 25 | 60 / 80 / 100 / 120 / 150 / 180 / 200 / 250 / 300 |
| 1-1/4" | 32 | 80 / 100 / 120 / 150 / 180 / 200 / 250 / 300 |
| 1-1/2" | 40 | 80 / 100 / 120 / 150 / 180 / 200 / 250 / 300 |
| 2" | 50 | 100 / 120 / 150 / 180 / 200 / 250 / 300 |
| 2-1/2" | 65 | 100 / 120 / 150 / 180 / 200 / 250 / 300 |
| 3" | 80 | 120 / 150 / 180 / 200 / 250 / 300 |
| 4" | 100 | 150 / 180 / 200 / 250 / 300 |
| 5" | 125 | 150 / 180 / 200 / 250 / 300 |
| 6" | 150 | 150 / 180 / 200 / 250 / 300 |
DN6 – DN100 · 1/8" – 4" · BSP / NPT
| Size | DN | W. (kgs) |
|---|---|---|
| 1/8" | 6 | 0.035 |
| 1/4" | 8 | 0.050 |
| 3/8" | 10 | 0.065 |
| 1/2" | 15 | 0.109 |
| 3/4" | 20 | 0.156 |
| 1" | 25 | 0.248 |
| 1-1/4" | 32 | 0.381 |
| 1-1/2" | 40 | 0.523 |
| 2" | 50 | 0.758 |
| 2-1/2" | 65 | 1.389 |
| 3" | 80 | 1.848 |
| 4" | 100 | 3.110 |
DN6 – DN100 · 1/8" – 4" · BSP / NPT
| Size | DN | W. (kgs) |
|---|---|---|
| 1/8" | 6 | 0.016 |
| 1/4" | 8 | 0.024 |
| 3/8" | 10 | 0.036 |
| 1/2" | 15 | 0.063 |
| 3/4" | 20 | 0.088 |
| 1" | 25 | 0.152 |
| 1-1/4" | 32 | 0.235 |
| 1-1/2" | 40 | 0.315 |
| 2" | 50 | 0.485 |
| 2-1/2" | 65 | 0.890 |
| 3" | 80 | 1.300 |
| 4" | 100 | 2.300 |
60+ reducing combinations · 1/4"×1/8" – 4"×3"
| Size | W. (kgs) |
|---|---|
| 1/4"-1/8" | 0.023 |
| 3/8"-1/8" | 0.028 |
| 3/8"-1/4" | 0.025 |
| 1/2"-1/8" | 0.043 |
| 1/2"-1/4" | 0.042 |
| 1/2"-3/8" | 0.042 |
| 3/4"-1/4" | 0.059 |
| 3/4"-3/8" | 0.058 |
| 3/4"-1/2" | 0.065 |
| 1"-1/4" | 0.092 |
| 1"-3/8" | 0.091 |
| 1"-1/2" | 0.100 |
| 1"-3/4" | 0.105 |
| 1-1/4"-1/4" | 0.149 |
| 1-1/4"-3/8" | 0.135 |
| 1-1/4"-1/2" | 0.125 |
| 1-1/4"-3/4" | 0.131 |
| 1-1/4"-1" | 0.141 |
| 1-1/2"-3/8" | — |
| 1-1/2"-1/2" | 0.173 |
| 1-1/2"-3/4" | 0.185 |
| 1-1/2"-1" | 0.180 |
| Size | W. (kgs) |
|---|---|
| 1-1/2"-1-1/4" | 0.193 |
| 2"-1/2" | 0.263 |
| 2"-3/4" | 0.253 |
| 2"-1" | 0.262 |
| 2"-1-1/4" | 0.268 |
| 2"-1-1/2" | 0.271 |
| 2-1/2"-1/2" | 0.503 |
| 2-1/2"-3/4" | — |
| 2-1/2"-1" | 0.433 |
| 2-1/2"-1-1/4" | 0.462 |
| 2-1/2"-1-1/2" | 0.476 |
| 2-1/2"-2" | 0.500 |
| 3"-1" | 0.606 |
| 3"-1-1/4" | 0.608 |
| 3"-1-1/2" | 0.710 |
| 3"-2" | 0.696 |
| 3"-2-1/2" | 0.704 |
| 4"-1-1/4" | 1.140 |
| 4"-1-1/2" | 1.164 |
| 4"-2" | 1.170 |
| 4"-2-1/2" | 1.233 |
| 4"-3" | 1.285 |
DN6 – DN100 · 1/8" – 4" · BSP / NPT
| Size | DN | W. (kgs) |
|---|---|---|
| 1/8" | 6 | 0.052 |
| 1/4" | 8 | 0.068 |
| 3/8" | 10 | 0.092 |
| 1/2" | 15 | 0.124 |
| 3/4" | 20 | 0.195 |
| 1" | 25 | 0.271 |
| 1-1/4" | 32 | 0.415 |
| 1-1/2" | 40 | 0.524 |
| 2" | 50 | 0.781 |
| 2-1/2" | 65 | 1.220 |
| 3" | 80 | 1.588 |
| 4" | 100 | 2.493 |
Five decades of metalworking, a quality system buyers can audit, and the flexibility distributors need on private-label runs.
Nearly fifty years producing industrial fittings from our Taipei base — process maturity you can rely on for repeat orders.
Documented, auditable quality control across casting, machining and threading, so every shipment meets the same standard.
Private labelling, custom packaging and made-to-drawing fittings for distributors building their own brand line.
Stocked SS304 standard sizes plus scaled production capacity to support container-load and recurring contract orders.
Sunze supplies wholesalers and OEM buyers across 30+ export markets. Here is what a few of them say about working with us.
Sunze has been our best supplier of pipe fittings for many years. Their unique manufacturing process and materials always ensure the quality of their products remains very stable, which has consistently driven the steady growth of our performance.
I have never seen a company so committed to quality, but Sunze has achieved it. The pipe fittings they produce are reliable in quality, making them our best partner for the past 30 years.
An unwavering and almost exacting commitment to quality is how I would describe Sunze as a company. They are undoubtedly one of our best suppliers.
From CNC turning and grinding to final inspection and export packing — every fitting is produced and checked in-house before it ships.
Trusted by distributors and industrial buyers across three primary regions, with documentation and threading standards matched to each market.
NPT-threaded fittings for industrial distribution and plumbing supply channels.
High-volume SS304 supply for construction, oil & gas and water infrastructure projects.
BSP-standard fittings meeting European distributor specification and packaging needs.
Common questions from buyers, distributors and procurement teams. Need more detail? Our export team is happy to help.
Sunze is a direct manufacturer. We have produced industrial pipe and hose fittings in Taiwan since 1976, with in-house CNC turning, machining, threading and inspection. Buying direct means factory pricing, full control over quality, and the ability to handle OEM and ODM requirements.
MOQ depends on the item, size and material. For standard SS304 fittings we can accommodate a wide range of order sizes, from trial quantities for new buyers up to high-volume production runs. Tell us your product, size and target quantity and we will confirm the most suitable MOQ and pricing.
We supply both NPT (for North American markets) and BSP (for European, Middle Eastern and most international markets). Threading is matched to your destination market and application. If you are unsure which standard you need, include your country and use case in your enquiry and we will advise.
Yes. Our manufacturing is ISO 9001 certified, with material and dimensional checks carried out in-house before shipment. Material certificates and inspection documentation can be provided on request to support your import and quality requirements.
Yes. Beyond our standard range we offer OEM and ODM production to drawings or samples, including custom sizes, materials and packaging with your branding. Send us your specification or sample and we will review feasibility and provide a quotation.
Lead time depends on the items, quantity and current production schedule. We export to over 30 countries by sea and air, and can quote FOB, CIF or other Incoterms to suit your logistics. Quotations are returned within 24 business hours, including an estimated production lead time.
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Send your product, size and quantity requirements. Our export team replies with pricing within 24 business hours.
Thank you. Our export team will reply to your email within 24 business hours.