Custom Pants Manufacturer | 50 Piece MOQ, Dongguan
Dongguan factory dedicated to pants production. Work pants, cargo, joggers, denim, casual pants. Western fit blocks. 30/70 payment terms. Wash testing documentation included.
- 50pcs MOQ Per Style
- 14+ Years Pants Focus
- 120K+ Pairs / Month
- 30/70 Payment Terms
Pants Categories We Produce
Six primary categories, each with pants-specific construction standards. GSM ranges reflect durability requirements for each use case.
Work / Utility Pants (280-400 GSM)
Industrial durability for demanding environments. Reinforced crotch seam with bar-tack stitching — the stress point where most work pants fail. Knee pocket access for insert pads. Tool loops and hammer loops. Box-bottom cargo pockets prevent sagging under weight. We recommend 320-380 GSM cotton duck with enzyme wash pre-treatment for minimal shrinkage.
Cargo Pants (260-320 GSM)
Ripstop cotton (260-300 GSM) balances tear resistance with comfort. Multi-pocket layouts require precise stitching — we use 20% smaller seam allowance on cargo pockets than standard, because most factories don’t account for the stress point where loaded pockets stretch after washing. D-ring attachments, adjustable waist tabs, knee reinforcement options.
Joggers / Sweatpants (280-360 GSM)
French terry fleece requires 48-hour resting period after cutting — this prevents leg twist that shows up after the first wash. Elastic waistbands need proper tension calculation: grip without leaving marks. We specify ankle cuff rib with added spandex for recovery. 300-340 GSM french terry provides optimal warmth-to-weight ratio for most markets.
Denim / Jeans (280-400 GSM)
Rigid denim starts at 320-400 GSM (12-16 oz). Stretch denim requires elastane content (1-5%) with modified seam construction to prevent blowout at stress points — we grade stretch patterns separately from rigid. Wash treatments (enzyme, acid, laser) require coordination between dyeing and finishing stages. We maintain wash consistency documentation across all production runs.
Casual / Chino Pants (180-260 GSM)
220-240 GSM cotton twill is the sweet spot — substantial enough to hold a crease but light enough for all-day comfort. Below 180 GSM, fabric becomes translucent on lighter colors. We apply wrinkle-resistant finishing during washing. Belt loops must align precisely with waistband seam placement — misalignment by even 5mm creates visible crookedness that buyers return products for.
Shorts (140-200 GSM)
Reinforced crotch seam mandatory for durability despite lighter fabric. Inseam lengths range from 5 inches (board shorts) to 9 inches (cargo shorts). Drawstring waists need channel stitching to prevent cord migration. Above 200 GSM, shorts become too hot for warm weather but may suit work shorts requiring durability.
Fit Blocks & Size Grading
Western body proportions — not modified Asian fit blocks. Four base blocks representing actual proportion patterns. Size consistency is the primary anxiety for pants buyers; we address it with full transparency on our grading methodology.
Our Four Fit Blocks (Slim, Regular, Relaxed, Athletic)
| Fit Block | Hip-to-Waist Ratio | Thigh Cut | Rise Length | Best For |
|---|---|---|---|---|
| Slim | +4″ | Tapered | Standard | Fashion brands, athletic builds |
| Regular | +6″ | Straight | Standard | Classic fit, mainstream markets |
| Relaxed | +8″ | Roomy | Long | Workwear, larger builds |
| Athletic | +6″ | Muscular thigh | Standard | Active brands, sports demographics |
How We Grade Sizes (Measurement Intervals)
Proper grading follows proportional scaling — not arbitrary percentage increases. A common factory mistake applies a flat 5% increase to all measurements per size, which produces impossible shapes at the extremes. Our process:
- Create base pattern in size Medium/32 waist with all measurements documented
- Define specific interval for each measurement point (not flat percentage)
- Grade interval: Waist +1″/size, Hip +2″/size, Thigh +1″/size, Inseam +1″/size, Knee +0.5″/size, Leg opening +0.25″/size
- Produce samples in all sizes, measure every point, compare to specification
- Allow +/- 1cm on body measurements, +/- 0.5cm on critical points (crotch seam, pocket placement)
- Adjust grade rules if any size falls outside tolerance
- Release approved patterns to production with measurement cards for QC
Size Range Options
| Market | Size Range | Typical Ratio |
|---|---|---|
| US | XS-3XL (6 sizes) | 1:2:2:2:1 |
| US Extended | XS-4XL (7 sizes) | 1:2:2:2:1:1 |
| UK | 28-40 waist (7 sizes) | 1:2:2:2:1:1:1 |
| EU | 44-58 (7 sizes) | 1:2:2:2:1:1:1 |
Custom size ranges available:
- 28-40 waist without XS/2XL
- 26-42 for junior/extended sizing
- Single-size production possible
Measurement Tolerance Standards
| Measurement | Tolerance | Method |
|---|---|---|
| Waist | +/- 1cm | Flat measurement |
| Hip | +/- 1.5cm | Flat at widest point |
| Inseam | +/- 0.5cm | Crotch seam to hem |
| Front rise | +/- 0.5cm | Waistband seam to crotch seam |
| Leg opening | +/- 0.5cm | Hem circumference |
We include a measurement card with every bulk order showing actual production measurements — not theoretical spec sheet numbers.
GSM Guidance by Pants Type
Fabric weight (GSM) determines durability, drape, and performance. Most buyers understand heavier means more durable, but the relationship varies by use case. We provide GSM recommendations in every quote based on your product description and target market.
| Pants Type | GSM Range | Use Case | Fabric Options |
|---|---|---|---|
| Work Pants | 280-400 | Industrial, construction, trades | 100% cotton duck, C/poly blend, ripstop |
| Cargo Pants | 260-320 | Outdoor, tactical, utility | Cotton ripstop, nylon, C/poly blend |
| Joggers | 280-360 | Athletic, loungewear | French terry fleece, brushed cotton |
| Denim | 280-400 (oz) | Fashion, casual, workwear | Rigid or 1-5% elastane stretch |
| Casual Pants | 180-260 | Office, smart casual | Cotton twill, C/poly, linen blend |
| Shorts | 140-200 | Casual, athletic, beach | Cotton, nylon, polyester mesh |
Key GSM Decisions
- Work pants: 320-360 GSM cotton duck standard. 400 GSM for rough surfaces but adds cost.
- Cargo: Avoid exceeding 320 GSM — excess weight causes pocket sag.
- Joggers: 300-340 GSM french terry optimal warmth/weight. Lighter pills faster.
- Denim: 12-14 oz (320-370 GSM) mainstream. 16 oz (400+ GSM) heavyweight workwear.
- Casual pants: 220-240 GSM twill sweet spot for chino-style pants.
- Shorts: Above 200 GSM too hot for summer; below 140 GSM lacks durability.
Construction Details
Crotch seam failure, pocket tearing, knee blowout — these complaints generate returns and negative reviews. Proper construction at stress points determines whether pants survive 50 washes or 5.
Crotch Seam Reinforcement
The crotch seam experiences more stress per square inch than any other part of pants. Standard single-stitch fails after repeated stress. Options:
| Method | Durability | Cost Impact | Best For |
|---|---|---|---|
| Double-stitch seam | High | +5-8% | Work pants, heavy GSM |
| Bar-tack reinforcement | Very High | +10-15% | Workwear, industrial |
| Rivets at junction | Very High | +8-12% | Denim, fashion |
| Diamond gusset | Extreme | +15-20% | Work pants, athletic |
Diamond gusset extends garment life 2-3x in work applications. Gusset options: diamond (4″x4″ classic workwear), fork (extends along inseam for athletic), zigzag (fashion functional).
Pocket Construction
Pocket failure is the second most common pants durability complaint. Key construction points:
- Pocket facing material: Same fabric as garment body — many factories use cheap lining that tears
- Seam allowance: Minimum 1.5cm. Ripstop cargo pockets: 1.2cm with reinforced stitching
- Stitching: Double-stitch on cargo and patch pockets. Single-stitch acceptable on welt pockets
- Pocket opening stay: Interior reinforcing at pocket mouth prevents stretching
Knee Reinforcement
- Permanent overlay: Sewn directly to pants leg — highest durability, adds bulk
- Knee pad pocket: Cargo pocket style with access opening — allows pad insertion
- Bartacks at knee: No overlay, stress points reinforced with dense stitching
Waistband & Zipper Specs
Waistband options:
- Fused: Interfacing fused to wrong side, maintains crispness
- Knit elastic: 20-50% stretch typical
- Half-inch woven: Standard for casual pants
Zipper spec:
- Fly: YKK or SBS metal, #3-5 coil, 6-8″ length
- Cargo: YKK or SBS coil, #3, auto-lock slider
- Belt loops: 1″ width, Box-X stitch, 8 stitches/cm
Quality Control & Defect Rates
Most factories quote “defect rates under 2%” without specifying where defects occur. We provide defect rates by garment area — from our QC records, not marketing claims.
Defect Rate Breakdown by Area
| Area | Defect Rate | Primary Issue |
|---|---|---|
| Seams (inseam/outseam) | 1.2% | Skipped stitch, uneven seam allowance |
| Pockets | 0.8% | Asymmetry, pocket mouth stretch |
| Hem | 0.6% | Uneven length |
| Waistband | 0.5% | Rolling, misalignment |
| Crotch seam | 0.4% | Needle damage, skipped stitch |
| Fly/Zipper | 0.3% | Zipper malfunction |
| Overall | 1.8% |
AQL Standards & Inspection Checkpoints
AQL Standards:
- AQL 2.5 — general appearance defects
- AQL 1.0 — functional defects
- AQL 4.0 — crotch seam, zipper functionality
- MIL-STD-105E sampling protocol
Pants-Specific Checkpoints:
- Waist/hip/inseam measurements
- Crotch seam pull test
- Pocket symmetry check
- Belt loop alignment
- Fly operation test
Wash Testing & Shrinkage Data
Pants fade, shrink, and lose shape — these complaints drive returns. Every bulk order includes wash testing documentation so you know exactly how your pants will perform.
Testing Standards (ASTM/AATCC)
| Test | Standard | What We Report |
|---|---|---|
| Dimensional change (shrinkage) | ASTM D4966 | Length/width % per fabric type |
| Colorfastness to washing | AATCC 61 | Grade 1-5 (gray scale) |
| Crocking resistance | AATCC 8 | Dry/wet rub grades |
| Pilling resistance | ASTM D3512 | Grade for fleece fabrics |
| Seam strength | ASTM D1683 | Grab test results |
Shrinkage Rates by Fabric Type
| Fabric | Length Shrinkage | Width Shrinkage | Post-Wash Stability |
|---|---|---|---|
| 100% cotton (pre-shrunk) | 3-5% | 2-3% | Stable after 3 washes |
| 100% cotton (not pre-shrunk) | 7-10% | 5-7% | Unstable |
| Cotton/poly 60/40 | 2-3% | 1-2% | Very stable |
| Cotton/poly 80/20 | 3-4% | 2-3% | Stable |
| 100% polyester | 0-1% | 0-1% | Extremely stable |
| Stretch denim (1-5% elastane) | 2-3% | 0-1% | Width stable |
| French terry fleece | 4-6% | 3-5% | Some reshaping |
We recommend pre-shrunk fabric for 100% cotton orders. If pre-shrunk isn’t specified, expect 5-7% length shrinkage. Enzyme wash pre-treatment can reduce this to 3-4%.
Colorfastness Grades
Rated on AATCC gray scale (1-5, 5 = no change). Indigo denim naturally fades — this is a design feature, not a defect. We document expected fading rates for indigo products.
| Fabric/Dye Type | Wash Fastness | Crocking (Dry) | Crocking (Wet) |
|---|---|---|---|
| Reactive dye (cotton) | Grade 3-4 | Grade 4 | Grade 3 |
| Disperse dye (polyester) | Grade 4-5 | Grade 4 | Grade 4 |
| Sulfur dye (denim) | Grade 3-4 | Grade 3-4 | Grade 2-3 |
| Indigo dye (denim) | Grade 2-3 | Grade 3 | Grade 2 |
Minimum Order Quantity
50 pieces per style per color. Lower than the 100+ MOQ that locks startups out, but higher than the 20-piece minimums that raise quality concerns about factory capability.
MOQ Structure
| Order Component | MOQ | Flexibility |
| Per style per color | 50 pcs | Size distribution flexible |
| Per size (if specified) | 20 pcs | Minimum per size |
| Custom dye colors | 300 pcs | Per color |
| Sample orders | 1-10 pcs | Full price, no bulk credit |
Size Run Math Explained
Standard size run ratio (S:M:L:XL = 1:2:2:2):
- 50 pieces per size × 4 sizes = 200 pieces minimum per color (if fixed per-size)
- 50 pieces per color with flexible distribution = 50 pieces total (how we structure MOQ)
Example: You want XS-4XL in 2 colors (navy and black) = 100 pieces total (50 per color). Size distribution within each color is flexible.
Size Run Math Explained
| Quantity | Per-Unit Cost Index | Lead Time |
|---|---|---|
| 50-99 pcs | 100% (baseline) | Standard |
| 100-299 pcs | 85-90% | Standard |
| 300-499 pcs | 75-80% | Standard |
| 500+ pcs | 65-70% | May reduce |
Volume discounts apply at style level, not total order. Adding colors doesn’t significantly increase per-unit cost after first color setup.
Sample Process
Sample quality predicts bulk quality. Our sample process ensures you see exactly what you’re ordering before committing to full production.
Sample Types & Timelines
| Type | Purpose | Timeline | Cost | Bulk Credit |
|---|---|---|---|---|
| Proto sample | Initial concept validation | 7-10 days | Full price | No |
| Fit sample | Size and fit verification | 10-14 days | Full price | Yes (100% with 300+ bulk) |
| Pre-production sample | Final approval before bulk | 7-10 days | Full price | Yes (100% with 500+ bulk) |
| Photo sample | Marketing assets | 14-21 days | Full price | No |
Sample-to-Bulk Consistency
Consistency checkpoints during bulk production:
- Same pattern block (documented version number)
- Same fabric specification (GSM, composition, dye lot recorded)
- Same construction methods (same machines, same stitch density)
- QC measurement comparison to sample measurements
First round of modifications included in sample cost. Additional revision rounds: $80-150 per round. Major changes (pattern restructure, fabric change) require new sample cycle.
Lead Time & Shipping
FOB Dongguan. Shipping quoted at actual cost — no markup. We provide realistic estimates and update you at each production milestone.
Production Lead Time by Quantity
| Order Size | Sample Lead Time | Bulk Lead Time |
|---|---|---|
| 50-199 pcs | 7 days | 21-28 days |
| 200-499 pcs | 7-10 days | 25-32 days |
| 500-999 pcs | 10-14 days | 28-35 days |
| 1000+ pcs | 14-21 days | 35-42 days |
Factors That Affect Timeline
- Fabric availability: In-stock fabrics ship within 3-5 days. Custom dye requires 14-21 additional days
- Construction complexity: Reinforcement features, gussets, specialty hardware add 3-7 days
- Season: Peak months (Jan-Mar, Jul-Sep) may extend lead times by 7-14 days
Shipping Methods & Transit Times
| Method | Typical Load | Transit to US/EU/AU |
|---|---|---|
| Express (DHL/FedEx) | 50-100 kg | 5-7 days |
| Air freight | 500+ kg | 10-14 days |
| Sea freight (FCL) | 1000+ kg | 18-24 days |
DDP (Delivered Duty Paid) available — final cost includes shipping, duties, and customs clearance. Q4 peak: order by September 1 for sea freight, October 1 for air freight.
Frequently Asked Questions
1.50 pieces MOQ but I need XS-4XL in 2 colors — is that 400 pieces total?
No. 50 pieces is per style per color. XS-4XL in navy + black = 100 pieces total (50 per color). Size distribution within each color is flexible — you don’t need 50 per size.
2.Can you match our existing fit blocks from a previous factory?
Yes. Provide your fit sample or tech pack with measurement specs. We analyze the pattern, reproduce it in our system, and produce a fit sample for approval. Fit matching typically requires one revision round.
3.What's your defect rate on inseam specifically?
Inseam/outseam: 1.2% (primarily skipped stitches, uneven seam allowance). Crotch seam specifically: 0.4%. From our QC records, not marketing claims.
4.How do you handle 100% cotton shrinkage on work pants?
We recommend pre-shrunk fabric. Without pre-shrunk: expect 5-7% length shrinkage, 3-5% width. Enzyme wash pre-treatment can reduce to 3-4% if 100% cotton is required for durability.
5.What's your payment structure for first orders?
6.Do you provide wash testing documentation?
Yes. Every bulk order includes dimensional change report (shrinkage), colorfastness grades, and pilling assessment at no extra charge.
7.What's lead time for 500 pieces during peak season?
Standard: 28-35 days. Peak season (Jan-Mar, Jul-Sep): 35-42 days. Rush orders (10-14 days) available at 25-35% premium.
8.What's your policy if bulk doesn't match the approved sample?
We rework or remake at our cost until it does. This guarantee is written into every production agreement. We measure bulk against sample measurements and document any deviations.