we can also produce according to drawing and standards provided by customers.
Material
Carbon steel, alloy steel and stainless steel.
We can produce according to materials appointed by consumers.
Packaging
Plywood Cases,plywood pallet, plastic bag or as customers requirement
Surface Treatment
Shot blasted, rust-proof black oil
Delivery Time
10-60 days
Quality
First grade
Others
1.Special design available according to your drawing.
2.anti-corrosion and high-temperature resistant with black painting
3. All the production process are made under the ISO9001:2000 strictly.
4. A conformity rate of ex-factory inspection of products.
Nominal Diameter
Outside Diameter
Center to End
D1
D2
DN
NPS
C
M
Series A
Series B
Series A
Series B
15×15×15
1/2×1/2×1/2
21.3
18
21.3
18
25
25
15×15×10
1/2×1/2×3/8
21.3
18
17.3
14
25
25
15×15×8
1/2×1/2×1/4
21.3
18
13.7
10
25
25
20×20×20
3/4×3/4×3/4
26.9
25
26.9
25
29
29
20×20×15
3/4×3/4×1/2
26.9
25
21.3
18
29
29
20×20×10
3/4×3/4×3/8
26.9
25
17.3
14
29
29
25×25×25
1×1×1
33.7
32
33.7
32
38
38
25×25×20
1×1×3/4
33.7
32
26.9
25
38
38
25×25×15
1×1×1/2
33.7
32
21.3
18
38
38
32×32×32
1.1/4×1.1/4×1.1/4
42.4
38
42.4
38
48
48
32×32×25
1.1/4×1.1/4×1
42.4
38
33.7
32
48
48
32×32×20
1.1/4×1.1/4×3/4
42.4
38
26.9
25
48
48
32×32×15
1.1/4×1.1/4×1/2
42.4
38
21.3
18
48
48
40×40×40
1.1/2×1.1/2×1.1/2
48.3
45
48.3
45
57
57
40×40×32
1.1/2×1.1/2×1.1/4
48.3
45
42.4
38
57
57
40×40×25
1.1/2×1.1/2×1
48.3
45
33.7
32
57
57
40×40×20
1.1/2×1.1/2×3/4
48.3
45
26.9
25
57
57
40×40×15
1.1/2×1.1/2×1/2
48.3
45
21.3
18
57
57
50×50×50
2×2×2
60.3
57
60.3
57
64
64
50×50×40
2×2×1.1/2
60.3
57
48.3
45
64
60
50×50×32
2×2×1.1/4
60.3
57
42.4
38
64
57
50×50×25
2×2×1
60.3
57
33.7
32
64
51
50×50×20
2×2×3/4
60.3
57
26.9
25
64
44
65×65×65
2.1/2×2/1/2×2.1/2
73
76
73
76
76
76
65×65×50
2.1/2×2/1/2×2
73
76
60.3
57
76
70
65×65×40
2.1/2×2/1/2×1.1/2
73
76
48.3
45
76
67
65×65×32
2.1/2×2/1/2×1.1/4
73
76
42.4
38
76
64
65×65×25
2.1/2×2/1/2×1
73
76
33.7
32
76
57
80×80×80
3×3×3
88.9
89
88.9
89
86
86
80×80×65
3×3×2.1/2
88.9
89
73
76
86
83
80×80×50
3×3×2
88.9
89
60.3
57
86
76
80×80×40
3×3×1.1/2
88.9
89
48.3
45
86
73
80×80×32
3×3×1.1/4
88.9
89
42.4
38
86
70
90×90×90
3.1/2×3.1/2×3.1/2
101.6
-
101.6
-
95
95
90×90×80
3.1/2×3.1/2×3
101.6
-
88.9
89
95
92
90×90×65
3.1/2×3.1/2×2.1/2
101.6
-
73
76
95
89
90×90×50
3.1/2×3.1/2×2
101.6
-
60.3
57
95
83
90×90×40
3.1/2×3.1/2×1.1/2
101.6
-
48.3
45
95
79
100×100×100
4×4×4
114.3
108
114.3
108
105
105
100×100×90
4×4×3.1/2
114.3
108
101.6
-
105
102
100×100×80
4×4×3
114.3
108
88.9
89
105
98
100×100×65
4×4×2.1/2
114.3
108
73
76
105
95
100×100×50
4×4×2
114.3
108
60.3
57
105
89
100×100×40
4×4×1.1/2
114.3
108
48.3
45
105
86
125×125×125
5×5×5
141.3
133
141.3
133
124
124
125×125×100
5×5×4
141.3
133
114.3
108
124
117
125×125×90
5×5×3.1/2
141.3
-
101.6
-
124
114
125×125×80
5×5×3
141.3
133
88.9
89
124
111
125×125×65
5×5×2.1.2
141.3
133
73
76
124
108
125×125×50
5×5×2
141.3
133
60.3
57
124
105
150×150×150
6×6×6
168.3
159
168.3
159
143
143
150×150×125
6×6×5
168.3
159
141.3
133
143
137
150×150×100
6×6×4
168.3
159
114.3
108
143
130
150×150×90
6×6×3.1/2
1, 68.3
-
101.6
-
143
127
150×150×80
6×6×3
168.3
159
88.9
89
143
124
150×150×65
6×6×2.1/2
168.3
159
73
76
143
121
200×200×200
8×8×8
219.1
219
219.1
219
178
178
200×200×150
8×8×6
219.1
219
168.3
159
178
168
200×200×125
8×8×5
219.1
219
141.4
133
178
162
200×200×100
8×8×4
219.1
219
114.3
108
178
156
200×200×90
8×8×3.1/2
219.1
-
101.6
-
178
152
250×250×250
10×10×10
273
273
273
273
216
216
250×250×200
10×10×8
273
273
219.1
219
216
203
250×250×150
10×10×6
273
273
168.3
159
216
194
250×250×125
10×10×5
273
273
141.3
133
216
191
250×250×100
10×10×4
273
273
114.3
108
216
184
300×300×300
12×12×12
323.9
325
323.9
325
254
254
300×300×250
12×12×10
323.9
325
273
273
254
241
300×300×200
12×12×8
323.9
325
219.1
219
254
229
300×300×150
12×12×6
323.9
325
168.3
159
254
219
300×300×125
12×12×5
323.9
325
141.3
133
254
216
350×350×350
14×14×14
355.6
377
355.6
377
279
279
350×350×300
14×14×12
355.6
377
323.9
325
279
270
350×350×250
14×14×10
355.6
377
273
273
279
257
350×350×200
14×14×8
355.6
377
219.1
219
279
248
350×350×150
14×14×6
355.6
377
168.3
159
279
238
Production Process:
Material Selection: We primarily source raw materials from leading steel mills such as Baosteel, TPCO, Yanbao, Baotou Steel, Changbao, and Huarun. We select tubes with smooth internal/external surfaces, uniform wall thickness, and a preference for higher manganese content to ensure a superior final appearance.
Material Inspection: Incoming materials undergo dimensional checks and chemical composition analysis.
Warehousing: Approved materials are stored in inventory.
Cutting: Tubes are cut to length with sufficient machining allowance. Burrs and metal chips are removed.
Bending & Forming: Tubes are heated using medium-frequency induction heaters and formed via pushing with precision dies. Dies are re-polished every 48 hours of operation to maintain strict dimensional tolerances.
Heat Treatment: Stress relief annealing (tempering) is performed.
End Machining: Bevels are cut on 90-degree CNC lathes to an angle of 37.5° ± 0.25°. The land (flat edge at the end of the bevel) is sized according to the pipe diameter. The land ensures a flush fit for butt welding and prevents burn-through during the TIG root pass.
Visual Inspection: Surfaces are checked for defects like scratches, peeling, or pitting.
Chemical Analysis: Composition is verified using imported handheld spectrometers.
Dimensional Inspection: Checks include outside diameter, wall thickness, ovality, and straightness.
Mechanical Testing: Tests include flattening and flaring to validate performance.
Sandblasting: A fine grit is used to create a uniform surface finish without excessive pitting.
Painting: Surfaces are evenly coated using environmentally friendly spray equipment.
Marking: Legible black background with white lettering is applied using a marking machine.
Packaging: Products are packed in wooden cases or on pallets, secured with steel strapping, and wrapped in plastic film for weather and dust protection.
Shipping: Careful handling using forklifts and overhead cranes ensures secure and orderly loading for transport.
Quality Assurance & Company Profile:
Certifications: ISO 9001 Quality Management System, Environmental Management System, Occupational Health & Safety Assessment Series, AAA Credit Rating, and SGS International Certification.
Quality Control: An integrated international ERP system manages production, supplemented by a secondary manual quality inspection to guarantee a 100% pass rate.
Production Capacity: Annual output of 20,000 tons of pipe fittings.
Facilities & Workforce: 7,000 sqm storage warehouse and a team of 200 employees.
R&D & Customization: A 300 sqm sample room supports our in-house R&D and ODM/ custom manufacturing capabilities.
Service: We offer straightforward cooperation, responsive service, and efficient logistics.
Experience: A decade of expertise in international export.
